课后习题与答案(英文版)
国际财务管理(英文版)课后习题答案9
CHAPTER 8 MANAGEMENT OF TRANSACTION EXPOSURE SUGGESTED ANSWERS AND SOLUTIONS TO END-OF-CHAPTER QUESTIONS ANDPROBLEMSQUESTIONS1. How would you define transaction exposure? How is it different from economic exposure?Answer: Transaction exposure is the sensitivity of realized domestic currency values of the firm‟s contractual cash flows denominated in foreign currencies to unexpected changes in exchange rates. Unlike economic exposure, transaction exposure is well-defined and short-term.2. Discuss and compare hedging transaction exposure using the forward contract vs. money market instruments. When do the alternative hedging approaches produce the same result?Answer: Hedging transaction exposure by a forward contract is achieved by selling or buying foreign currency receivables or payables forward. On the other hand, money market hedge is achieved by borrowing or lending the present value of foreign currency receivables or payables, thereby creating offsetting foreign currency positions. If the interest rate parity is holding, the two hedging methods are equivalent.3. Discuss and compare the costs of hedging via the forward contract and the options contract.Answer: There is no up-front cost of hedging by forward contracts. In the case of options hedging, however, hedgers should pay the premiums for the contracts up-front. The cost of forward hedging, however, may be realized ex post when the hedger regrets his/her hedging decision.4. What are the advantages of a currency options contract as a hedging tool compared with the forward contract?Answer: The main advantage of using options contracts for hedging is that the hedger can decide whether to exercise options upon observing the realized future exchange rate. Options thus provide a hedge against ex post regret that forward hedger might have to suffer. Hedgers can only eliminate the downside risk while retaining the upside potential.5. Suppose your company has purchased a put option on the German mark to manage exchange exposure associated with an account receivable denominated in that currency. In this case, your company can be said to have an …insurance‟ policy on its receivable. Explain in what sense this is so.Answer: Your company in this case knows in advance that it will receive a certain minimum dollar amount no matter what might happen to the $/€exchange rate. Furthermore, if the German mark appreciates, your company will benefit from the rising euro.6. Recent surveys of corporate exchange risk management practices indicate that many U.S. firms simply do not hedge. How would you explain this result?Answer: There can be many possible reasons for this. First, many firms may feel that they are not really exposed to exchange risk due to product diversification, diversified markets for their products, etc. Second, firms may be using self-insurance against exchange risk. Third, firms may feel that shareholders can diversify exchange risk themselves, rendering corporate risk management unnecessary.7. Should a firm hedge? Why or why not?Answer: In a perfect capital market, firms may not need to hedge exchange risk. But firms can add to their value by hedging if markets are imperfect. First, if management knows about the firm‟s exposure better than shareholders, the firm, not its shareholders, should hedge. Second, firms may be able to hedge at a lower cost. Third, if default costs are significant, corporate hedging can be justifiable because it reduces the probability of default. Fourth, if the firm faces progressive taxes, it can reduce tax obligations by hedging which stabilizes corporate earnings.8. Using an example, discuss the possible effect of hedging on a firm‟s tax obligations.Answer: One can use an example similar to the one presented in the chapter.9. Explain contingent exposure and discuss the advantages of using currency options to manage this type of currency exposure.Answer: Companies may encounter a situation where they may or may not face currency exposure. In this situation, companies need options, not obligations, to buy or sell a given amount of foreign exchange they may or may not receive or have to pay. If companies either hedge using forward contracts or do not hedge at all, they may face definite currency exposure.10. Explain cross-hedging and discuss the factors determining its effectiveness.Answer: Cross-hedging involves hedging a position in one asset by taking a position in another asset. The effectiveness of cross-hedging would depend on the strength and stability of the relationship between the two assets.PROBLEMS1. Cray Research sold a super computer to the Max Planck Institute in Germany on credit and invoiced €10 million payable in six months. Currently, the six-month forward exchange rate is $1.10/€ and the foreign exchange advisor for Cray Research predicts that the spot rate is likely to be $1.05/€ in six months.(a) What is the expected gain/loss from the forward hedging?(b) If you were the financial manager of Cray Research, would you recommend hedging this euro receivable? Why or why not?(c) Suppose the foreign exchange advisor predicts that the future spot rate will be the same as the forward exchange rate quoted today. Would you recommend hedging in this case? Why or why not?Solution: (a) Expected gain($) = 10,000,000(1.10 – 1.05)= 10,000,000(.05)= $500,000.(b) I would recommend hedging because Cray Research can increase the expected dollar receipt by $500,000 and also eliminate the exchange risk.(c) Since I eliminate risk without sacrificing dollar receipt, I still would recommend hedging.2. IBM purchased computer chips from NEC, a Japanese electronics concern, and was billed ¥250 million payable in three months. Currently, the spot exchange rate is ¥105/$ and the three-month forward rate is ¥100/$. The three-month money market interest rate is 8 percent per annum in the U.S. and 7 percent per annum in Japan. The management of IBM decided to use the money market hedge to deal with this yen account payable.(a) Explain the process of a money market hedge and compute the dollar cost of meeting the yen obligation.(b) Conduct the cash flow analysis of the money market hedge.Solution: (a). Let‟s first compute the PV of ¥250 million, i.e.,250m/1.0175 = ¥245,700,245.7So if the above yen amount is invested today at the Japanese interest rate for three months, the maturity value will be exactly equal to ¥25 million which is the amount of payable.To buy the above yen amount today, it will cost:$2,340,002.34 = ¥250,000,000/105.The dollar cost of meeting this yen obligation is $2,340,002.34 as of today.(b)___________________________________________________________________Transaction CF0 CF1____________________________________________________________________1. Buy yens spot -$2,340,002.34with dollars ¥245,700,245.702. Invest in Japan - ¥245,700,245.70 ¥250,000,0003. Pay yens - ¥250,000,000Net cash flow - $2,340,002.34____________________________________________________________________3. You plan to visit Geneva, Switzerland in three months to attend an international business conference. You expect to incur the total cost of SF 5,000 for lodging, meals and transportation during your stay. As of today, the spot exchange rate is $0.60/SF and the three-month forward rate is $0.63/SF. You can buy the three-month call option on SF with the exercise rate of $0.64/SF for the premium of $0.05 per SF. Assume that your expected future spot exchange rate is the same as the forward rate. The three-month interest rate is 6 percent per annum in the United States and 4 percent per annum in Switzerland.(a) Calculate your expected dollar cost of buying SF5,000 if you choose to hedge via call option on SF.(b) Calculate the future dollar cost of meeting this SF obligation if you decide to hedge using a forward contract.(c) At what future spot exchange rate will you be indifferent between the forward and option market hedges?(d) Illustrate the future dollar costs of meeting the SF payable against the future spot exchange rate under both the options and forward market hedges.Solution: (a) Total option premium = (.05)(5000) = $250. In three months, $250 is worth $253.75 = $250(1.015). At the expected future spot rate of $0.63/SF, which is less than the exercise price, you don‟t expect to exercise options. Rather, you expect to buy Swiss franc at $0.63/SF. Since you are going to buy SF5,000, you expect to spend $3,150 (=.63x5,000). Thus, the total expected cost of buying SF5,000 will be the sum of $3,150 and $253.75, i.e., $3,403.75.(b) $3,150 = (.63)(5,000).(c) $3,150 = 5,000x + 253.75, where x represents the break-even future spot rate. Solving for x, we obtain x = $0.57925/SF. Note that at the break-even future spot rate, options will not be exercised.(d) If the Swiss franc appreciates beyond $0.64/SF, which is the exercise price of call option, you will exercise the option and buy SF5,000 for $3,200. The total cost of buying SF5,000 will be $3,453.75 = $3,200 + $253.75.This is the maximum you will pay.4. Boeing just signed a contract to sell a Boeing 737 aircraft to Air France. Air France will be billed €20 million which is payable in one year. The current spot exchange rate is $1.05/€ and the one -year forward rate is $1.10/€. The annual interest rate is 6.0% in the U.S. and5.0% in France. Boeing is concerned with the volatile exchange rate between the dollar and the euro and would like to hedge exchange exposure. (a) It is considering two hedging alternatives: sell the euro proceeds from the sale forward or borrow euros from the Credit Lyonnaise against the euro receivable. Which alternative would you recommend? Why?(b) Other things being equal, at what forward exchange rate would Boeing be indifferent between the two hedging methods?Solution: (a) In the case of forward hedge, the future dollar proceeds will be (20,000,000)(1.10) = $22,000,000. In the case of money market hedge (MMH), the firm has to first borrow the PV of its euro receivable, i.e., 20,000,000/1.05 =€19,047,619. Then the firm should exchange this euro amount into dollars at the current spot rate to receive: (€19,047,619)($1.05/€) = $20,000,000, which can be invested at the dollar interest rate for one year to yield:$20,000,000(1.06) = $21,200,000.Clearly, the firm can receive $800,000 more by using forward hedging.(b) According to IRP, F = S(1+i $)/(1+i F ). Thus the “indifferent” forward rate will be:F = 1.05(1.06)/1.05 = $1.06/€. $ Cost Options hedge Forward hedge $3,453.75 $3,150 0 0.579 0.64 (strike price) $/SF$253.755. Suppose that Baltimore Machinery sold a drilling machine to a Swiss firm and gave the Swiss client a choice of paying either $10,000 or SF 15,000 in three months.(a) In the above example, Baltimore Machinery effectively gave the Swiss client a free option to buy up to $10,000 dollars using Swiss franc. What is the …implied‟ exercise exchange rate?(b) If the spot exchange rate turns out to be $0.62/SF, which currency do you think the Swiss client will choose to use for payment? What is the value of this free option for the Swiss client?(c) What is the best way for Baltimore Machinery to deal with the exchange exposure?Solution: (a) The implied exercise (price) rate is: 10,000/15,000 = $0.6667/SF.(b) If the Swiss client chooses to pay $10,000, it will cost SF16,129 (=10,000/.62). Since the Swiss client has an option to pay SF15,000, it will choose to do so. The value of this option is obviously SF1,129 (=SF16,129-SF15,000).(c) Baltimore Machinery faces a contingent exposure in the sense that it may or may not receive SF15,000 in the future. The firm thus can hedge this exposure by buying a put option on SF15,000.6. Princess Cruise Company (PCC) purchased a ship from Mitsubishi Heavy Industry. PCC owes Mitsubishi Heavy Industry 500 million yen in one year. The current spot rate is 124 yen per dollar and the one-year forward rate is 110 yen per dollar. The annual interest rate is 5% in Japan and 8% in the U.S. PCC can also buy a one-year call option on yen at the strike price of $.0081 per yen for a premium of .014 cents per yen.(a) Compute the future dollar costs of meeting this obligation using the money market hedge and the forward hedges.(b) Assuming that the forward exchange rate is the best predictor of the future spot rate, compute the expected future dollar cost of meeting this obligation when the option hedge is used.(c) At what future spot rate do you think PCC may be indifferent between the option and forward hedge?Solution: (a) In the case of forward hedge, the dollar cost will be 500,000,000/110 = $4,545,455. In the case of money market hedge, the future dollar cost will be: 500,000,000(1.08)/(1.05)(124)= $4,147,465.(b) The option premium is: (.014/100)(500,000,000) = $70,000. Its future value will be $70,000(1.08) = $75,600.At the expected future spot rate of $.0091(=1/110), which is higher than the exercise of $.0081, PCC will exercise its call option and buy ¥500,000,000 for $4,050,000 (=500,000,000x.0081).The total expected cost will thus be $4,125,600, which is the sum of $75,600 and $4,050,000.(c) When the option hedge is used, PCC will spend “at most” $4,125,000. On the other hand, when the forward hedging is used, PCC will have to spend $4,545,455 regardless of the future spot rate. This means that the options hedge dominates the forward hedge. At no future spot rate, PCC will be indifferent between forward and options hedges.7. Airbus sold an aircraft, A400, to Delta Airlines, a U.S. company, and billed $30 million payable in six months. Airbus is concerned with the euro proceeds from international sales and would like to control exchange risk. The current spot exchang e rate is $1.05/€ and six-month forward exchange rate is $1.10/€ at the moment. Airbus can buy a six-month put option on U.S. dollars with a strike price of €0.95/$ for a premium of €0.02 per U.S. dollar. Currently, six-month interest rate is 2.5% in the euro zone and 3.0% in the U.S.pute the guaranteed euro proceeds from the American sale if Airbus decides to hedge using aforward contract.b.If Airbus decides to hedge using money market instruments, what action does Airbus need to take?What would be the guaranteed euro proceeds from the American sale in this case?c.If Airbus decides to hedge using put options on U.S. dollars, what would be the …expected‟ europroceeds from the American sale? Assume that Airbus regards the current forward exchange rate as an unbiased predictor of the future spot exchange rate.d.At what future spot exchange rate do you think Airbus will be indifferent between the option andmoney market hedge?Solution:a. Airbus will sell $30 million forward for €27,272,727 = ($30,000,000) / ($1.10/€).b. Airbus will borrow the present value of the dollar receivable, i.e., $29,126,214 = $30,000,000/1.03, and then sell the dollar proceeds spot for euros: €27,739,251. This is the euro amount that Airbus is going to keep.c. Since th e expected future spot rate is less than the strike price of the put option, i.e., €0.9091< €0.95, Airbus expects to exercise the option and receive €28,500,000 = ($30,000,000)(€0.95/$). This is gross proceeds. Airbus spent €600,000 (=0.02x30,000,000) upfr ont for the option and its future cost is equal to €615,000 = €600,000 x 1.025. Thus the net euro proceeds from the American sale is €27,885,000, which is the difference between the gross proceeds and the option costs.d. At the indifferent future spot rate, the following will hold:€28,432,732 = S T (30,000,000) - €615,000.Solving for S T, we obtain the “indifference” future spot exchange rate, i.e., €0.9683/$, or $1.0327/€.Note that €28,432,732 is the future value of the proceeds under money market hed ging:€28,432,732 = (€27,739,251) (1.025).Suggested solution for Mini Case: Chase Options, Inc.[See Chapter 13 for the case text]Chase Options, Inc.Hedging Foreign Currency Exposure Through Currency OptionsHarvey A. PoniachekI. Case SummaryThis case reviews the foreign exchange options market and hedging. It presents various international transactions that require currency options hedging strategies by the corporations involved. Seven transactions under a variety of circumstances are introduced that require hedging by currency options. The transactions involve hedging of dividend remittances, portfolio investment exposure, and strategic economic competitiveness. Market quotations are provided for options (and options hedging ratios), forwards, and interest rates for various maturities.II. Case Objective.The case introduces the student to the principles of currency options market and hedging strategies. The transactions are of various types that often confront companies that are involved in extensive international business or multinational corporations. The case induces students to acquire hands-on experience in addressing specific exposure and hedging concerns, including how to apply various market quotations, which hedging strategy is most suitable, and how to address exposure in foreign currency through cross hedging policies.III. Proposed Assignment Solution1. The company expects DM100 million in repatriated profits, and does not want the DM/$ exchange rate at which they convert those profits to rise above 1.70. They can hedge this exposure using DM put options with a strike price of 1.70. If the spot rate rises above 1.70, they can exercise the option, while ifthat rate falls they can enjoy additional profits from favorable exchange rate movements.To purchase the options would require an up-front premium of:DM 100,000,000 x 0.0164 = DM 1,640,000.With a strike price of 1.70 DM/$, this would assure the U.S. company of receiving at least:DM 100,000,000 – DM 1,640,000 x (1 + 0.085106 x 272/360)= DM 98,254,544/1.70 DM/$ = $57,796,791by exercising the option if the DM depreciated. Note that the proceeds from the repatriated profits are reduced by the premium paid, which is further adjusted by the interest foregone on this amount.However, if the DM were to appreciate relative to the dollar, the company would allow the option to expire, and enjoy greater dollar proceeds from this increase.Should forward contracts be used to hedge this exposure, the proceeds received would be:DM100,000,000/1.6725 DM/$ = $59,790,732,regardless of the movement of the DM/$ exchange rate. While this amount is almost $2 million more than that realized using option hedges above, there is no flexibility regarding the exercise date; if this date differs from that at which the repatriate profits are available, the company may be exposed to additional further current exposure. Further, there is no opportunity to enjoy any appreciation in the DM.If the company were to buy DM puts as above, and sell an equivalent amount in calls with strike price 1.647, the premium paid would be exactly offset by the premium received. This would assure that the exchange rate realized would fall between 1.647 and 1.700. If the rate rises above 1.700, the company will exercise its put option, and if it fell below 1.647, the other party would use its call; for any rate in between, both options would expire worthless. The proceeds realized would then fall between:DM 100,00,000/1.647 DM/$ = $60,716,454andDM 100,000,000/1.700 DM/$ = $58,823,529.This would allow the company some upside potential, while guaranteeing proceeds at least $1 million greater than the minimum for simply buying a put as above.Buy/Sell OptionsDM/$Spot Put Payoff “Put”Profits Call Payoff“Call”Profits Net Profit1.60 (1,742,846) 0 1,742,846 60,716,454 60,716,454 1.61 (1,742,846) 0 1,742,846 60,716,454 60,716,454 1.62 (1,742,846) 0 1,742,846 60,716,454 60,716,454 1.63 (1,742,846) 0 1,742,846 60,716,454 60,716,454 1.64 (1,742,846) 0 1,742,846 60,716,454 60,716,454 1.65 (1,742,846) 60,606,061 1,742,846 0 60,606,061 1.66 (1,742,846) 60,240,964 1,742,846 0 60,240,964 1.67 (1,742,846) 59,880,240 1,742,846 0 59,880,240 1.68 (1,742,846) 59,523,810 1,742,846 0 59,523,810 1.69 (1,742,846) 59,171,598 1,742,846 0 59,171,598 1.70 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.71 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.72 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.73 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.74 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.75 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.76 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.77 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.78 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.79 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.80 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.81 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.82 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.83 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.84 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.85 (1,742,846) 58,823,529 1,742,846 0 58,823,529Since the firm believes that there is a good chance that the pound sterling will weaken, locking them into a forward contract would not be appropriate, because they would lose the opportunity to profit from this weakening. Their hedge strategy should follow for an upside potential to match their viewpoint. Therefore, they should purchase sterling call options, paying a premium of:5,000,000 STG x 0.0176 = 88,000 STG.If the dollar strengthens against the pound, the firm allows the option to expire, and buys sterling in the spot market at a cheaper price than they would have paid for a forward contract; otherwise, the sterling calls protect against unfavorable depreciation of the dollar.Because the fund manager is uncertain when he will sell the bonds, he requires a hedge which will allow flexibility as to the exercise date. Thus, options are the best instrument for him to use. He can buy A$ puts to lock in a floor of 0.72 A$/$. Since he is willing to forego any further currency appreciation, he can sell A$ calls with a strike price of 0.8025 A$/$ to defray the cost of his hedge (in fact he earns a net premium of A$ 100,000,000 x (0.007234 –0.007211) = A$ 2,300), while knowing that he can‟t receive less than 0.72 A$/$ when redeeming his investment, and can benefit from a small appreciation of the A$.Example #3:Problem: Hedge principal denominated in A$ into US$. Forgo upside potential to buy floor protection.I. Hedge by writing calls and buying puts1) Write calls for $/A$ @ 0.8025Buy puts for $/A$ @ 0.72# contracts needed = Principal in A$/Contract size100,000,000A$/100,000 A$ = 1002) Revenue from sale of calls = (# contracts)(size of contract)(premium)$75,573 = (100)(100,000 A$)(.007234 $/A$)(1 + .0825 195/360)3) Total cost of puts = (# contracts)(size of contract)(premium)$75,332 = (100)(100,000 A$)(.007211 $/A$)(1 + .0825 195/360)4) Put payoffIf spot falls below 0.72, fund manager will exercise putIf spot rises above 0.72, fund manager will let put expire5) Call payoffIf spot rises above .8025, call will be exercised If spot falls below .8025, call will expire6) Net payoffSee following Table for net payoff Australian Dollar Bond HedgeStrikePrice Put Payoff “Put”Principal Call Payoff“Call”Principal Net Profit0.60 (75,332) 72,000,000 75,573 0 72,000,2410.61 (75,332) 72,000,000 75,573 0 72,000,2410.62 (75,332) 72,000,000 75,573 0 72,000,2410.63 (75,332) 72,000,000 75,573 0 72,000,2410.64 (75,332) 72,000,000 75,573 0 72,000,2410.65 (75,332) 72,000,000 75,573 0 72,000,2410.66 (75,332) 72,000,000 75,573 0 72,000,2410.67 (75,332) 72,000,000 75,573 0 72,000,2410.68 (75,332) 72,000,000 75,573 0 72,000,2410.69 (75,332) 72,000,000 75,573 0 72,000,2410.70 (75,332) 72,000,000 75,573 0 72,000,2410.71 (75,332) 72,000,000 75,573 0 72,000,2410.72 (75,332) 72,000,000 75,573 0 72,000,2410.73 (75,332) 73,000,000 75,573 0 73,000,2410.74 (75,332) 74,000,000 75,573 0 74,000,2410.75 (75,332) 75,000,000 75,573 0 75,000,2410.76 (75,332) 76,000,000 75,573 0 76,000,2410.77 (75,332) 77,000,000 75,573 0 77,000,2410.78 (75,332) 78,000,000 75,573 0 78,000,2410.79 (75,332) 79,000,000 75,573 0 79,000,2410.80 (75,332) 80,000,000 75,573 0 80,000,2410.81 (75,332) 0 75,573 80,250,000 80,250,2410.82 (75,332) 0 75,573 80,250,000 80,250,2410.83 (75,332) 0 75,573 80,250,000 80,250,2410.84 (75,332) 0 75,573 80,250,000 80,250,2410.85 (75,332) 0 75,573 80,250,000 80,250,2414. The German company is bidding on a contract which they cannot be certain of winning. Thus, the need to execute a currency transaction is similarly uncertain, and using a forward or futures as a hedge is inappropriate, because it would force them to perform even if they do not win the contract.Using a sterling put option as a hedge for this transaction makes the most sense. For a premium of:12 million STG x 0.0161 = 193,200 STG,they can assure themselves that adverse movements in the pound sterling exchange rate will not diminish the profitability of the project (and hence the feasibility of their bid), while at the same time allowing the potential for gains from sterling appreciation.5. Since AMC in concerned about the adverse effects that a strengthening of the dollar would have on its business, we need to create a situation in which it will profit from such an appreciation. Purchasing a yen put or a dollar call will achieve this objective. The data in Exhibit 1, row 7 represent a 10 percent appreciation of the dollar (128.15 strike vs. 116.5 forward rate) and can be used to hedge against a similar appreciation of the dollar.For every million yen of hedging, the cost would be:Yen 100,000,000 x 0.000127 = 127 Yen.To determine the breakeven point, we need to compute the value of this option if the dollar appreciated 10 percent (spot rose to 128.15), and subtract from it the premium we paid. This profit would be compared with the profit earned on five to 10 percent of AMC‟s sales (which would be lost as a result of the dollar appreciation). The number of options to be purchased which would equalize these two quantities would represent the breakeven point.Example #5:Hedge the economic cost of the depreciating Yen to AMC.If we assume that AMC sales fall in direct proportion to depreciation in the yen (i.e., a 10 percent decline in yen and 10 percent decline in sales), then we can hedge the full value of AMC‟s sales. I have assumed $100 million in sales.1) Buy yen puts# contracts needed = Expected Sales *Current ¥/$ Rate / Contract size9600 = ($100,000,000)(120¥/$) / ¥1,250,0002) Total Cost = (# contracts)(contract size)(premium)$1,524,000 = (9600)( ¥1,250,000)($0.0001275/¥)3) Floor rate = Exercise – Premium128.1499¥/$ = 128.15¥/$ - $1,524,000/12,000,000,000¥4) The payoff changes depending on the level of the ¥/$ rate. The following table summarizes thepayoffs. An equilibrium is reached when the spot rate equals the floor rate.AMC ProfitabilityYen/$ Spot Put Payoff Sales Net Profit 120 (1,524,990) 100,000,000 98,475,010 121 (1,524,990) 99,173,664 97,648,564 122 (1,524,990) 98,360,656 96,835,666 123 (1,524,990) 97,560,976 86,035,986 124 (1,524,990) 96,774,194 95,249,204 125 (1,524,990) 96,000,000 94,475,010 126 (1,524,990) 95,238,095 93,713,105 127 (847,829) 94,488,189 93,640,360 128 (109,640) 93,750,000 93,640,360 129 617,104 93,023,256 93,640,360 130 1,332,668 92,307,692 93,640,360 131 2,037,307 91,603,053 93,640,360 132 2,731,269 90,909,091 93,640,360 133 3,414,796 90,225,664 93,640,360 134 4,088,122 89,552,239 93,640,360 135 4,751,431 88,888,889 93,640,360 136 5,405,066 88,235,294 93,640,360 137 6,049,118 87,591,241 93,640,360 138 6,683,839 86,966,522 93,640,360 139 7,308,425 86,330,936 93,640,360 140 7,926,075 85,714,286 93,640,360 141 8,533,977 85,106,383 93,640,360 142 9,133,318 84,507,042 93,640,360 143 9,724,276 83,916,084 93,640,360 144 10,307,027 83,333,333 93,640,360 145 10,881,740 82,758,621 93,640,360 146 11,448,579 82,191,781 93,640,360 147 12,007,707 81,632,653 93,640,360 148 12,569,279 81,081,081 93,640,360 149 13,103,448 80,536,913 93,640,360 150 13,640,360 80,000,000 93,640,360。
国际财务管理(英文版)课后习题答案2
CHAPTER 1GLOBALIZATION AND THE MULTINATIONAL FIRMSUGGESTED ANSWERS TO END—OF-CHAPTER QUESTIONS QUESTIONS1 。
Why is it important to study international financial management？Answer: We are now living in a world where all the major economic functions, i.e.，consumption，production, and investment，are highly globalized. It is thus essential for financial managers to fully understand vital international dimensions of financial management. This global shift is in marked contrast to a situation that existed when the authors of this book were learning finance some twenty years ago. At that time, most professors customarily (and safely, to some extent) ignored international aspects of finance 。
This mode of operation has become untenable since then.2. How is international financial management different from domestic financial management？Answer ：There are three major dimensions that set apart international finance from domestic finance 。
计算机组成与体系结构英文版课后练习题含答案
Chapter 1 - Introduction
Exercise 1.1
What are the three mn functions of a computer?
What is the purpose of the control unit?
Answer:The purpose of the control unit is to control the flow of data and instructions within the CPU.
Exercise 4.2
Chapter 5 - Memory Organization
Exercise 5.1
What is the difference between RAM and ROM?
Answer:RAM (Random Access Memory) is volatile memory that can be read from and written to. ROM (Read-Only Memory) is non-volatile memory that can only be read.
What is the difference between a RISC and a CISC processor?
Answer:A RISC (Reduced Instruction Set Computer) processor has a simplified instruction set with fewer instructions that are executed more quickly. A CISC (Complex Instruction Set Computer) processor has a more complex instruction set with more instructions that can perform complex operations in a single instruction.
微积分英文版第九版课后练习题含答案
微积分英文版第九版课后练习题含答案微积分是数学中重要的一部分，其关注的是一条曲线或曲面的局部性质。
美国著名数学家Stewart所著的微积分英文版第九版是微积分学习的重要教材之一，本文将介绍其课后练习题，并提供答案供大家进行自我学习和测试。
课后练习题微积分英文版第九版的课后练习题共分为两部分，其中Part 1是选择题，Part 2是填空题和证明题，共计约1700道题目。
Part 1中包含了大量的选择题，这些题目主要考察读者对微积分理论的掌握和应用。
大多数题目都要求读者用所学知识推理或计算来获得正确答案。
这些题目中难易程度参差不齐，有一些比较简单，但也有一些比较困难。
Part 2的题目类型较多，包括了填空题、证明题、计算题等。
这些题目内容繁杂、难度较大，需要读者花费很多时间和精力来解答。
这些题目主要是为了检测读者对所学知识的深层次理解和应用能力，考察读者的逻辑思维和推理能力。
答案微积分英文版第九版提供了相应的课后练习答案，可以帮助读者检验自己的答案是否正确，同时也可以帮助读者更好地理解和掌握所学知识。
答案分为Part 1和Part 2两部分，且每部分分别包含了选择题和非选择题的答案。
这些答案详细、准确，提供了完整的解题思路和方法，帮助读者更好地理解题目的解法，并弥补了部分教材中的不足之处。
读者可以通过该教材的官方网站或者其他渠道获得课后练习题的答案。
结论微积分是数学中非常重要的一门学科，对于各个领域的科学研究、技术发展和社会进步都有着举足轻重的作用。
而微积分英文版第九版课后练习题则是培养和检验读者对微积分学习的深刻理解和应用能力的重要途径。
通过对这些题目的研究和答案的掌握，可以帮助读者更好地掌握微积分学科，提升自己的学术能力和科研能力。
管理会计(英文版)课后习题答案(高等教育出版社)chapter 4
管理会计（高等教育出版社）于增彪（清华大学）改编余绪缨（厦门大学）审校CHAPTER 4ACTIVITY-BASED COSTINGQUESTIONS FOR WRITING AND DISCUSSION1.Unit costs provide essential informationneeded for inventory valuation and prepara-tion of income statements. Knowing unit costs is also critical for many decisions such as bidding decisions and accept-or-reject special order decisions.2.Cost measurement is determining the dollaramounts associated with resources used in production. Cost assignment is associating the dollar amounts, once measured, with units produced.3.An actual overhead rate is rarely used be-cause of problems with accuracy and timeli-ness. Waiting until the end of the year to en-sure accuracy is rejected because of the need to have timely information. Timeliness of information based on actual overhead costs runs into difficulty (accuracy problems) because overhead is incurred nonuniformly and because production also may be non-uniform.4.For plantwide rates, overhead is first col-lected in a plantwide pool, using direct trac-ing. Next, an overhead rate is computed and used to assign overhead to products. 5.First stage: Overhead is assigned to produc-tion department pools using direct tracing, driver tracing, and allocation. Second stage: Individual departmental rates are used to assign overhead to products as they pass through the departments.6.Departmental rates would be chosen overplantwide rates whenever some depart-ments are more overhead intensive than others and if certain products spend more time in some departments than they do in others.7.Plantwide overhead rates assign overheadto products in proportion to the amount of the unit-level cost driver used. If the prod-ucts consume some overhead activities in different proportions than those assigned by the unit-level cost driver, then cost dis-tortions can occur (the product diversity factor). These distortions can be significant if the nonunit-level overhead costs represent a significant proportion of total overhead costs.8.Low-volume products may consume non-unit-level overhead activities in much greater proportions than indicated by a unit-levelcost driver and vice versa for high-volumeproducts. If so, then the low-volume prod-ucts will receive too little overhead and thehigh-volume products too much.9.If some products are undercosted and oth-ers are overcosted, a firm can make a num-ber of competitively bad decisions. For ex-ample, the firm might select the wrongproduct mix or submit distorted bids.10.Nonunit-level overhead activities are thoseoverhead activities that are not highly corre-lated with production volume measures. Ex-amples include setups, material handling,and inspection. Nonunit-level cost driversare causal factors—factors that explain theconsumption of nonunit-level overhead. Ex-amples include setup hours, number ofmoves, and hours of inspection.11.Product diversity is present whenever prod-ucts have different consumption ratios fordifferent overhead activities.12.An overhead consumption ratio measuresthe proportion of an overhead activity con-sumed by a product.13.Departmental rates typically use unit-levelcost drivers. If products consume nonunit-level overhead activities in different propor-tions than those of unit-level measures, thenit is possible for departmental rates to moveeven further away from the true consumptionratios, since the departmental unit-level ra-tios usually differ from the one used at theplant level.14.Agree. Prime costs can be assigned usingdirect tracing and so do not cause cost dis-tortions. Overhead costs, however, are notdirectly attributable and can cause distor-tions. For example, using unit-level activitydrivers to trace nonunit-level overhead costswould cause distortions.15.Activity-based product costing is an over-head costing approach that first assignscosts to activities and then to products. Theassignment is made possible through theidentification of activities, their costs, and theuse of cost drivers.16.An activity dictionary is a list of activitiesaccompanied by information that describeseach activity (called attributes)17. A primary activity is consumed by the finalcost objects such as products and custom-ers, whereas secondary activities are con-sumed by other activities (ultimately con-sumed by primary activities).18.Costs are assigned using direct tracing andresource drivers.19.Homogeneous sets of activities are pro-duced by associating activities that have thesame level and that can use the same driverto assign costs to products. Homogeneoussets of activities reduce the number of over-head rates to a reasonable level.20. A homogeneous cost pool is a collection ofoverhead costs that are logically related tothe tasks being performed and for whichcost variations can be explained by a singleactivity driver. Thus, a homogeneous pool ismade up of activities with the same process,the same activity level, and the same driver.21.Unit-level activities are those that occur eachtime a product is produced. Batch-level activi-ties are those that are performed each time abatch of products is produced. Product-levelor sustaining activities are those that areperformed as needed to support the variousproducts produced by a company. Facility-level activities are those that sustain a facto-ry’s general man ufacturing process.22.ABC improves costing accuracy wheneverthere is diversity of cost objects. There arevarious kinds of cost objects, with productsbeing only one type. Thus, ABC can be use-ful for improving cost assignments to costobjects like customers and suppliers. Cus-tomer and supplier diversity can occur for asingle product firm or for a JIT manufactur-ing firm.23.Activity-based customer costing can identifywhat it is costing to service different custom-ers. Once known, a firm can then devise astrategy to increase its profitability by focus-ing more on profitable customers, convertingunprofitable customers to profitable oneswhere possible, and “firing” customers thatcannot be made profitable.24.Activity-based supplier costing traces allsupplier-caused activity costs to suppliers.This new total cost may prove to be lowerthan what is signaled simply by purchaseprice.EXERCISES4–11.Quarter 1 Quarter 2 Q uarter 3 Quarter 4 Total Units produced 400,000 160,000 80,000 560,000 1,200,000 Prime costs $8,000,000 $3,200,000 $1,600,000 $11,200,000 $24,000,000 Overhead costs $3,200,000 $2,400,000 $3,600,000 $2,800,000 $12,000,000 Unit cost:Prime $20 $20 $20 $20 $20Overhead 8 15 45 5 10Total $28 $35 $65 $25 $30 2. Actual costing can produce wide swings in the overhead cost per unit. Thecause appears to be nonuniform incurrence of overhead and nonuniform production (seasonal production is a possibility).3. First, calculate a predetermined rate:OH rate = $11,640,000/1,200,000= $9.70 per unitThis rate is used to assign overhead to the product throughout the year.Since the driver is units produced, $9.70 would be assigned to each unit.Adding this to the actual prime costs produces a unit cost under normal cost-ing:Unit cost = $9.70 + $20.00 = $29.70This cost is close to the actual annual cost of $30.00.1. $13,500,000/3,600,000 = $3.75 per direct labor hour (DLH)2. $3.75 ⨯ 3,456,000 = $12,960,0003. Applied overhead $ 12,960,000A ctual overhead 13,600,000U nderapplied overhead $ 640,0004. Predetermined rates allow the calculation of unit costs and avoid the prob-lems of nonuniform overhead incurrence and nonuniform production asso-ciated with actual overhead rates. Unit cost information is needed throughout the year for a variety of managerial purposes.4–31. Predetermined overhead rate = $4,500,000/600,000 = $7.50 per DLH2. Applied overhead = $7.50 ⨯ 585,000 = $4,387,5003. Applied overhead $ 4,387,500Actual overhead 4,466,250Underapplied overhead $ (78,750)4. Unit cost:Prime costs $ 6,750,000Overhead costs 4,387,500Total $ 11,137,500Units ÷750,000Unit cost $ 14.851. Predetermined overhead rate = $4,500,000/187,500 = $24 per machine hour(MHr)2. Applied overhead = $24 187,875 = $4,509,0003. Applied overhead $ 4,509,000Actual overhead 4,466,250Overapplied overhead $ 42,7504. Unit cost:Prime costs $ 6,750,000Overhead costs 4,509,000Total $ 11,259,000Units ÷750,000Unit cost $ 15.01**Rounded5. Gandars needs to determine what causes its overhead. Is it primarily labordriven (e.g., composed predominantly of fringe benefits, indirect labor, and personnel costs), or is it machine oriented (e.g., composed of depreciation on machinery, utilities, and maintenance)? It is impossible for a decision to be made on the basis of the information given in this exercise.1. Predetermined rates:Drilling Department: Rate = $600,000/280,000 = $2.14* per MHrAssembly Department: Rate = $392,000/200,000= $1.96 per DLH*Rounded2. Applied overhead:Drilling Department: $2.14 ⨯ 288,000 = $616,320Assembly Department: $1.96 ⨯ 196,000 = $384,160Overhead variances:Drilling Assembly Total Actual overhead $602,000 $ 412,000 $ 1,014,000 Applied overhead 616,320 384,160 1,000,480 Overhead variance $ (14,320) over $ 27,840 under $ 13,520 3. Unit overhead cost = [($2.14 ⨯ 4,000) + ($1.96 ⨯ 1,600)]/8,000= $11,696/8,000= $1.46**Rounded1. Activity rates:Machining = $632,000/300,000= $2.11* per MHrInspection = $360,000/12,000= $30 per inspection hour*Rounded2. Unit overhead cost = [($2.11 ⨯ 8,000) + ($30 ⨯ 800)]/8,000= $40,880/8,000= $5.114–71. Yes. Since direct materials and direct labor are directly traceable to eachproduct, their cost assignment should be accurate.2. Elegant: (1.75 ⨯ $9,000)/3,000 = $5.25 per briefcaseFina: (1.75 ⨯ $3,000)/3,000 = $1.75 per briefcaseNote: Overhead rate = $21,000/$12,000 = $1.75 per direct labor dollar (or 175 percent of direct labor cost).There are more machine and setup costs assigned to Elegant than Fina. This is clearly a distortion because the production of Fina is automated and uses the machine resources much more than the handcrafted Elegant. In fact, the consumption ratio for machining is 0.10 and 0.90 (using machine hours as the measure of usage). Thus, Fina uses nine times the machining resources as Elegant. Setup costs are similarly distorted. The products use an equal number of setups hours. Yet, if direct labor dollars are used, then the Elegant briefcase receives three times more machining costs than the Fina briefcase.4–7 Concluded3. Overhead rate = $21,000/5,000= $4.20 per MHrElegant: ($4.20 ⨯ 500)/3,000 = $0.70 per briefcaseFina: ($4.20 ⨯ 4,500)/3,000 = $6.30 per briefcaseThis cost assignment appears more reasonable given the relative demands each product places on machine resources. However, once a firm moves to a multiproduct setting, using only one activity driver to assign costs will likely produce product cost distortions. Products tend to make different demands on overhead activities, and this should be reflected in overhead cost assign-ments. Usually, this means the use of both unit- and nonunit-level activity drivers. In this example, there is a unit-level activity (machining) and a non-unit-level activity (setting up equipment). The consumption ratios for each (using machine hours and setup hours as the activity drivers) are as follows:Elegant FinaMachining 0.10 0.90 (500/5,000 and 4,500/5,000)Setups 0.50 0.50 (100/200 and 100/200)Setup costs are not assigned accurately. Two activity rates are needed—one based on machine hours and the other on setup hours:Machine rate: $18,000/5,000 = $3.60 per MHrSetup rate: $3,000/200 = $15 per setup hourCosts assigned to each product:Machining: Elegant Fina$3.60 ⨯ 500 $ 1,800$3.60 ⨯ 4,500 $ 16,200Setups:$15 ⨯ 100 1,500 1,500Total $ 3,300 $ 17,700Units ÷3,000 ÷3,000Unit overhead cost $ 1.10 $ 5.90Activity dictionary:Activity Activity Primary/ ActivityName Description Secondary Driver Providing nursing Satisfying patient Primary Nursing hours care needsSupervising Coordinating Secondary Number of nurses nurses nursing activitiesFeeding patients Providing meals Primary Number of mealsto patientsLaundering Cleaning and Primary Pounds of laundry bedding and delivering clothesclothes and beddingProviding Therapy treatments Primary Hours of therapy physical directed bytherapy physicianMonitoring Using equipment to Primary Monitoring hours patients monitor patientconditions1. dCost of labor (0.75 ⨯ $40,000) $30,000Forklift (direct tracing) 6,000 Total cost of receiving $36,000 2. b3. a4. c5. dActivity rates (Questions 2–5):Receiving: $36,000/50,000 = $0.72 per partSetup: $60,000/300 = $200 per setupGrinding: $90,000/18,000 = $5 per MHrInspecting: $45,000/4,500 = $10 per inspection hour6. aOverhead rate = $231,000/20,000 = $11.55 per DLH Direct materials $ 850Direct labor 600Overhead ($11.55 ⨯ 50) 578*Total cost $ 2,028Units ÷100Unit cost $ 20.28*Rounded4–9 Concluded7. bDirect materials $ 850.00Direct labor 600.00Overhead:Setup 200.00 ($200 ⨯ 1)Inspecting 40.00 ($10 ⨯ 4)Grinding 100.00 ($5 ⨯ 20)Receiving 14.40 ($0.72 ⨯ 20) Total costs $ 1,804.40Units ÷100Unit cost $ 18.04**Rounded4–101. Unit-level: Testing products, inserting dies2. Batch-level: Setting up batches, handling wafer lots, purchasingmaterials, receiving materials3. Product-level: Developing test programs, making probe cards,engineering design, paying suppliers4. Facility-level: Providing utilities, providing space4–111. Unit-level activities: MachiningBatch-level activities: Setups and packing Product-level activities: ReceivingFacility-level activities: None2. Pools and drivers:Unit-levelPool 1:Machining $80,000Activity driver: Machine hoursBatch-levelPool 2:Setups $24,000Packing 30,000Total cost $54,000Product-levelPool 3:Receiving $18,000Activity driver: Receiving orders4–11 Concluded3. Pool rates:Pool 1: $80,000/40,000 = $2 per MHrPool 2: $54,000/300 = $180 per setupPool 3: $18,000/600 = $30 per receiving order 4. Overhead assignment:InfantryPool 1: $2 ⨯ 20,000 = $ 40,000Pool 2: $180 ⨯ 200 = 36,000Pool 3: $30 ⨯ 200 = 6,000Total $ 82,000Special forcesPool 1: $2 ⨯ 20,000 = $ 40,000Pool 2: $180 ⨯ 100 = 18,000Pool 3: $30 ⨯ 400 = 12,000Total $ 70,0004–121. Deluxe Percent Regular PercentPrice $900 100% $750 100% Cost 576 64 600 80 Unit gross profit $324 36% $150 20% Total gross profit:($324 ⨯ 100,000) $32,400,000($150 ⨯ 800,000) $120,000,0002. Calculation of unit overhead costs:Deluxe Regular Unit-level:Machining:$200 ⨯ 100,000 $20,000,000$200 ⨯ 300,000 $60,000,000 Batch-level:Setups:$3,000 ⨯ 300 900,000$3,000 ⨯ 200 600,000 Packing:$20 ⨯ 100,000 2,000,000$20 ⨯ 400,000 8,000,000 Product-level:Engineering:$40 ⨯ 50,000 2,000,000$40 ⨯ 100,000 4,000,000 Facility-level:Providing space:$1 ⨯ 200,000 200,000$1 ⨯ 800,000 800,000 Total overhead $ 25,100,000 $ 73,400,000 Units ÷100,000 ÷800,000 Overhead per unit $ 251 $ 91.75Deluxe Percent Regular Percent Price $900 100% $750.00 100%Cost 780* 87*** 574.50** 77***Unit gross profit $120 13%*** $175.50 23%***Total gross profit:($120 ⨯ 100,000) $12,000,000($175.50 ⨯ 800,000) $140,400,000*$529 + $251**$482.75 + $91.75***Rounded3. Using activity-based costing, a much different picture of the deluxe and regu-lar products emerges. The regular model appears to be more profitable. Per-haps it should be emphasized.4–131. JIT Non-JITSales a$12,500,000 $12,500,000Allocation b750,000 750,000a$125 ⨯ 100,000, where $125 = $100 + ($100 ⨯ 0.25), and 100,000 is the average order size times the number of ordersb0.50 ⨯ $1,500,0002. Activity rates:Ordering rate = $880,000/220 = $4,000 per sales orderSelling rate = $320,000/40 = $8,000 per sales callService rate = $300,000/150 = $2,000 per service callJIT Non-JITOrdering costs:$4,000 ⨯ 200 $ 800,000$4,000 ⨯ 20 $ 80,000Selling costs:$8,000 ⨯ 20 160,000$8,000 ⨯ 20 160,000Service costs:$2,000 ⨯ 100 200,000$2,000 ⨯ 50 100,000T otal $ 1,160,000 $ 340,000For the non-JIT customers, the customer costs amount to $750,000/20 = $37,500 per order under the original allocation. Using activity assignments, this drops to $340,000/20 = $17,000 per order, a difference of $20,500 per or-der. For an order of 5,000 units, the order price can be decreased by $4.10 per unit without affecting customer profitability. Overall profitability will decrease, however, unless the price for orders is increased to JIT customers.3. It sounds like the JIT buyers are switching their inventory carrying costs toEmery without any significant benefit to Emery. Emery needs to increase prices to reflect the additional demands on customer-support activities. Fur-thermore, additional price increases may be needed to reflect the increased number of setups, purchases, and so on, that are likely occurring inside the plant. Emery should also immediately initiate discussions with its JIT cus-tomers to begin negotiations for achieving some of the benefits that a JIT supplier should have, such as long-term contracts. The benefits of long-term contracting may offset most or all of the increased costs from the additional demands made on other activities.4–141. Supplier cost:First, calculate the activity rates for assigning costs to suppliers: Inspecting components: $240,000/2,000 = $120 per sampling hourReworking products: $760,500/1,500 = $507 per rework hourWarranty work: $4,800/8,000 = $600 per warranty hourNext, calculate the cost per component by supplier:Supplier cost:Vance Foy Purchase cost:$23.50 ⨯ 400,000 $ 9,400,000$21.50 ⨯ 1,600,000 $ 34,400,000 Inspecting components:$120 ⨯ 40 4,800$120 ⨯ 1,960 235,200 Reworking products:$507 ⨯ 90 45,630$507 ⨯ 1,410 714,870 Warranty work:$600 ⨯ 400 240,000$600 ⨯ 7,600 4,560,000 Total supplier cost $ 9,690,430 $ 39,910,070Units supplied ÷400,000 ÷1,600,000Unit cost $ 24.23* $ 24.94**RoundedThe difference is in favor of Vance; however, when the price concession is con sidered, the cost of Vance is $23.23, which is less than Foy’s component.Lumus should accept the contractual offer made by Vance.4–14 Concluded2. Warranty hours would act as the best driver of the three choices. Using thisdriver, the rate is $1,000,000/8,000 = $125 per warranty hour. The cost as-signed to each component would be:Vance Foy Lost sales:$125 ⨯ 400 $ 50,000$125 ⨯ 7,600 $ 950,000$ 50,000 $ 950,000 U nits supplied ÷ 400,000 ÷1,600,000I ncrease in unit cost $ 0.13* $ 0.59**RoundedPROBLEMS4–151. Product cost assignment:Overhead rates:Patterns: $30,000/15,000 = $2.00 per DLHFinishing: $90,000/30,000 = $3.00 per DLHUnit cost computation:Duffel BagsPatterns:$2.00 ⨯ 0.1 $0.20$2.00 ⨯ 0.2 $0.40Finishing:$3.00 ⨯ 0.2 0.60$3.00 ⨯ 0.4 1.20Total per unit $0.80 $1.602. Cost before addition of duffel bags:$60,000/100,000 = $0.60 per unitThe assignment is accurate because all costs belong to the one product.4–15 Concluded3. Activity-based cost assignment:Stage 1:Pool rate = $120,000/80,000 = $1.50 per transactionStage 2:Overhead applied:Backpacks: $1.50 ⨯ 40,000* = $60,000Duffel bags: $1.50 ⨯ 40,000 = $60,000*80,000 transactions/2 = 40,000 (number of transactions had doubled)Unit cost:Backpacks: $60,000/100,000 = $0.60 per unitDuffel bags: $60,000/25,000 = $2.40 per unit4. This problem allows the student to see what the accounting cost per unitshould be by providing the ability to calculate the cost with and without the duffel bags. With this perspective, it becomes easy to see the benefits of the activity-based approach over those of the functional-based approach. The activity-based approach provides the same cost per unit as the single-product setting. The functional-based approach used transactions to allocate accounting costs to each producing department, and this allocation probably reflects quite well the consumption of accounting costs by each producing department. The problem is the second-stage allocation. Direct labor hours do not capture the consumption pattern of the individual products as they pass through the departments. The distortion occurs, not in using transac-tions to assign accounting costs to departments, but in using direct labor hours to assign these costs to the two products.In a single-product environment, ABC offers no improvement in product cost-ing accuracy. However, even in a single-product environment, it may be poss-ible to increase the accuracy of cost assignments to other cost objects such as customers.4–161. Plantwide rate = $660,000/440,000 = $1.50 per DLHOverhead cost per unit:Model A: $1.50 ⨯ 140,000/30,000 = $7.00Model B: $1.50 ⨯ 300,000/300,000 = $1.502. Departmental rates:Department 1: $420,000/180,000 = $2.33 per MHr*Department 2: $240,000/400,000 = $0.60 per DLHDepartment 1: $420,000/40,000 = $10.50 DLHDepartment 2: $240,000/40,000 = $6.00 per MHrOverhead cost per unit:Model A: [($2.33 ⨯ 10,000) + ($0.60 ⨯ 130,000)]/30,000 = $3.38Model B: [($2.33 ⨯ 170,000) + ($0.60 ⨯ 270,000)]/300,000 = $1.86Overhead cost per unit:Model A: [($10.50 ⨯ 10,000) + ($6.00 ⨯ 10,000)]/30,000 = $5.50Model B: [($10.50 ⨯ 30,000) + ($6.00 ⨯ 30,000)]/300,000 = $1.65*Rounded numbers throughoutA common justification is that of using machine hours for machine-intensivedepartments and labor hours for labor-intensive departments. Using this rea-soning, the first set of departmental rates would be selected (machine hours for Department 1 and direct labor hours for Department 2).3. Calculation of pool rates:Driver Pool RateBatch-level pool:Setup and inspection Product runs $320,000/100 = $3,200 per runUnit-level pool:Machine andmaintenance Machine hours $340,000/220,000 = $1.545 per MHr Note: Inspection hours could have been used as an activity driver instead of production runs.Overhead assignment:Model BBatch-level:Setups and inspection$3,200 ⨯ 40 $ 128,000$3,200 ⨯ 60 $ 192,000Unit-level:Power and maintenance$1.545 ⨯ 20,000 30,900$1.545 ⨯ 200,000 309,000Total overhead $ 158,900 $ 501,000Units produced ÷30,000 ÷ 300,000Overhead per unit $ 5.30 $ 1.674. Using activity-based costs as the standard, we can say that the first set ofdepartmental rates decreased the accuracy of the overhead cost assignment (over the plantwide rate) for both products. The opposite is true for the second set of departmental rates. In fact, the second set is very close to the activity assignments. Apparently, departmental rates can either improve or worsen plantwide assignments. In the first case, D epartment 1’s costs are assigned at a 17:1 ratio which overcosts B and undercosts A in a big way.Yet, this is the most likely set of rates at the departmental level! This raises some doubt about the conventional wisdom regarding departmental rates.4–171. Labor and gasoline are driver tracing.Labor (0.75 ⨯ $120,000) $ 90,000 Time = Resource driverGasoline ($3 ⨯ 6,000 moves) 18,000 Moves = Resource driverDepreciation (2 ⨯ $6,000) 12,000 Direct tracingTotal cost $ 120,0002. Plantwide rate = $600,000/20,000= $30 per DLHUnit cost:DeluxePrime costs $80.00 $160Overhead:$30 ⨯ 10,000/40,000 7.50$30 ⨯ 10,000/20,000 15$87.50 $1753. Pool 1: Maintenance $ 114,000Engineering 120,000Total $ 234,000Maintenance hours ÷4,000Pool rate $ 58.50Note:Engineering hours could also be used as a driver. The activities are grouped together because they have the same process, are both product lev-el, and have the same consumption ratios (0.25, 0.75).Pool 2: Material handling $ 120,000Number of moves ÷6,000Pool rate $ 20Pool 3: Setting up $ 96,000Number of setups ÷80Pool rate $ 1,200Note: Material handling and setups are both batch-level activities but have dif-ferent consumption ratios.Pool 4: Purchasing $ 60,000Receiving 40,000Paying suppliersTotal $ 130,000Orders processed ÷750Pool rate $ 173.33Note:The three activities are all product-level activities and have the same consumption ratios.Pool 5: Providing space $ 20,000Machine hours ÷10,000Pool rate $ 2Note: This is the only facility-level activity.4. Unit cost:Basic Deluxe Prime costs $ 3,200,000 $ 3,200,000Overhead:Pool 1:$58.50 ⨯ 1,000 58,500$58.50 ⨯ 3,000 175,500 Pool 2:$20 ⨯ 2,000 40,000$20 ⨯ 4,000 80,000 Pool 3:$1,200 ⨯ 20 24,000$1,200 ⨯ 60 72,000 Pool 4:$173.33 ⨯ 250 43,333$173.33 ⨯ 500 86,665 Pool 5:$2 ⨯ 5,000 10,000$2 ⨯ 5,000 10,000 Total $ 3,375,833 $ 3,624,165Units produced ÷40,000 ÷20,000Unit cost (ABC) $ 84.40 $ 181.21Unit cost (traditional) $ 87.50 $ 175.00The ABC costs are more accurate (better tracing—closer representation of actual resource consumption). This shows that the basic model was over-costed and the deluxe model undercosted when the plantwide overhead rate was used.1. Unit-level costs ($120 ⨯ 20,000) $ 2,400,000Batch-level costs ($80,000 ⨯ 20) 1,600,000Product-level costs ($80,000 ⨯ 10) 800,000Facility-level ($20 ⨯ 20,000) 400,000Total cost $ 5,200,0002. Unit-level costs ($120 ⨯ 30,000) $ 3,600,000Batch-level costs ($80,000 ⨯ 20) 1,600,000Product-level costs ($80,000 ⨯ 10) 800,000Facility-level costs 400,000Total cost $ 6,400,000The unit-based costs increase because these costs vary with the number of units produced. Because the batches and engineering orders did not change, the batch-level costs and product-level costs remain the same, behaving as fixed costs with respect to the unit-based driver. The facility-level costs are fixed costs and do not vary with any driver.3. Unit-level costs ($120 ⨯ 30,000) $ 3,600,000Batch-level costs ($80,000 ⨯ 30) 2,400,000Product-level costs ($80,000 ⨯ 12) 960,000Facility-level costs 400,000Total cost $ 7,360,000Batch-level costs increase as the number of batches changes, and the costs of engineering support change as the number of orders change. Thus, batches and orders increased, increasing the total cost of the model.4. Classifying costs by category allows their behavior to be better understood.This, in turn, creates the ability to better manage costs and make decisions.1. The total cost of care is $1,950,000 plus a $50,000 share of the cost of super-vision [(25/150) ⨯ $300,000]. The cost of supervision is computed as follows: Salary of supervisor (direct) $ 70,000Salary of secretary (direct) 22,000Capital costs (direct) 100,000Assistants (3 ⨯ 0.75 ⨯ $48,000) 108,000Total $ 300,000Thus, the cost per patient day is computed as follows:$2,000,000/10,000 = $200 per patient day(The total cost of care divided by patient days.) Notice that every maternity patient—regardless of type—would pay the daily rate of $200.2. First, the cost of the secondary activity (supervision) must be assigned to theprimary activities (various nursing care activities) that consume it (the driver is the number of nurses):Maternity nursing care assignment:(25/150) ⨯ $300,000 = $50,000Thus, the total cost of nursing care is $950,000 + $50,000 = $1,000,000.Next, calculate the activity rates for the two primary activities:Occupancy and feeding: $1,000,000/10,000 = $100 per patient dayNursing care: $1,000,000/50,000 = $20 per nursing hour。
中国文化简介(英文版)课后习题答案2
中国文化简介（英文版）课后习题答案2Chapter6—chapter8Chapter 61.1) d 2) d 3) d 4) d2.5) Feng, Ya, Song, Fu, Bi, Xing6) The Classic of Poetry; The Classic of History; The Classic of Rites; The Classic of Rites; The Classic of Changes; The Spring and Autumn Annals.7) Feng (Ballads); Ya (Odes); Song (Sacrificial Songs)3.8) a. The Great Learningb. The Analects of Confucius9) a. The Doctrine of the Meanb . The Classic of History10) a. The Classic of Changesb. The Four Books and Five Classics4.11) “Confucius Way of the Heart”means if everyone makes strict demands onhimself/herself, and does everything according to the Confucian rites, then the relations between the king and the minister, the father and the son will eventually be harmonized, and the society will go smoothly.12) “To know something is not so good as to like it; to like it is not so good as todelight in it.” It means a person who prefers it can learn better than one who merely understands it; but a person who delights in it learns even better than one who only prefers it.5. 略Chapter 71 Multiple choice (choose the best answer).1) a 2) b 3) a 4) a2 Fill in the blanks.5)controlling flood, Yv the Great, Shun6)Pan Gu, Nv Wa, her own model, yellow clay3 Translate the following terms into English7)a. the descendants of Yan and Huang b. Yv the Great controlling the flood8)a. the Eight Immortals crossing the sea. b. Nv Wa creating man9)a. Pan Gu creating the world b.Kua Fu chasing the Sun4 Answer the following questions.10)Huang Di is resourceful in invention as well as in war and is credited with the invention of many things, like carts and boats, clothes, houses, writing and silkworm breeding and Silk weaving. Yan Di is credited with the invention of farming and medicine. He invented the wooden plow and taught people how to treat diseases. Wars urged the mixture and the assimilation of different tribes and eventually formed a tribal alliance of Huang Di and Yan Di. Traditions has it that Chinese civilization originated from the era of Huang Di and Yan Di, for they are the ancestors of the Chinese people. That is why the Chinese call themselves the descendants of Yan and Huang.11)略5 Retell the stories with the help of the following pictures.略Chapter 81.1) a 2)d 3)d 4) a2.5) the guti verse forms, jinti verse forms, classical, verse form, moder6) Shijing7) Li Sao8) Sage Poet, the greatest realist poet9) Su Shi, Li Qingzhao3.10) a. Tang Poems b. Songci11) a. yuanqu b. Chuci4.12) Yuefu originally referred to the “music bureau” in the Han Dynasty, responsible for collecting or writing poems, folk songs and ballads, and having them set to music. Later, poems, folk songs and ballads collected and compiled by yufu were given the name Yuefu.13) Ci is a kind of poetry written to certain tunes with strict tonal patterns and rhyme schemes, in fixed numbers of lines and words, originated in Tang Dynasty and fully developed in Song Dynasty.14) Apart from the above verse forms, there is also Fu, it’s something between poetry and prose, similar to rhapsody: a descriptive poem, and much cultivated from Han times to the Six Dynasties. Examples are Su Shi's “Fu on the Red Cliff”, Ban Gu’s Rhapsody on Two Capitals”, etc.5. 略。
计算机网络(第四版)课后习题(英文)+习题答案(中英文)
ANDREW S. TANENBAUM 秒，约533 msec.----- COMPUTER NETWORKS FOURTH EDITION PROBLEM SOLUTIONS 8. A collection of five routers is to be conn ected in a poi nt-to-poi nt sub net.Collected and Modified By Yan Zhe nXing, Mail To: Betwee n each pair of routers, the desig ners may put a high-speed line, aClassify: E aEasy, M ^Middle, H Hard , DaDeleteGree n: Importa nt Red: Master Blue: VI Others:Know Grey:—Unnecessary ----------------------------------------------------------------------------------------------ML V Chapter 1 In troductio nProblems2. An alter native to a LAN is simply a big timeshari ng system with termi nals forall users. Give two adva ntages of a clie nt-server system using a LAN.(M)使用局域网模型可以容易地增加节点。
如果局域网只是一条长的电缆，且不会因个别的失效而崩溃(例如采用镜像服务-------------------------------------------器)的情况下，使用局域网模型会更便宜。
有机化学英文版课后练习题含答案
有机化学英文版课后练习题含答案Organic chemistry is the study of carbon-based compounds, which are found in everything from your food and medicine to the plastics in your car. It is an important subject in the field of chemistry and is usually taught at the university level. In this article, we will introduce some organic chemistry practice questions with answers, which can be used by students to practice and improve their knowledge of the subject.Question 1Draw the structure of 2-methyl-1-butene.Answer:2-methyl-1-butene structure2-methyl-1-butene structureQuestion 2Write the condensed formula for 2,4-dimethylheptane.Answer:The condensed formula is C9H20.Question 3Write the IUPAC name for CH3CH2CH2C(CH3)2CH3.Answer:The IUPAC name is 3,3-dimethylpentane.Question 4What is the functional group of butanoic acid?Answer:The functional group is a carboxyl group (-COOH).Question 5Which compound is more acidic: ethanol or acetic acid?Answer:Acetic acid is more acidic than ethanol because the presence of the carboxyl group in acetic acid makes it more acidic than ethanol.Question 6What is the mechanism of the reaction between ethene and hydrogen to form ethane?Answer:The mechanism is a catalytic hydrogenation reaction, which involves the addition of hydrogen to the carbon-carbon double bond in ethene to form ethane.Question 7What is the effect of increasing the size of the alkyl group on the boiling point of alkanes?Answer:Increasing the size of the alkyl group increases the boiling point of alkanes because larger molecules have stronger van der Waals forces of attraction, which require more energy to break.Question 8What is the difference between an electrophile and a nucleophile?Answer:An electrophile is an atom or molecule that is attractedto electrons and accepts a pr of electrons from another molecule during a chemical reaction. A nucleophile is an atom or molecule that has a lone pr of electrons and donates a pr of electrons to another molecule during a chemical reaction.Question 9What is the difference between an alkane and an alkene?Answer:An alkane is a hydrocarbon that contns only single bonds between carbon atoms. An alkene is a hydrocarbon that contns at least one carbon-carbon double bond.Question 10What is the difference between a saturated and an unsaturated hydrocarbon?Answer:A saturated hydrocarbon contns only single bonds between carbon atoms and is therefore。
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Question 6 Explain why low-density polyethylene is good to make grocery bags, however, super high molecular weight polyethylene must be used where strength and very high wear resistance is needed. In general, for thermoplastics, the higher the average molecular weight the higher will be the melting temperature and the higher will be the Young’s modulus of the polymer.
Question 4 What are the major advantages associated with plastics compared to ceramics, glasses, and metallic materials? Commercial polymers are lightweight, corrosion-resistant material with low strength and stiffness, and they are not suitable for use at high temperatures. These polymers are relatively inexpensive and are readily formed into a variety of shapes, ranging form plastic bags to mechanical gears to bathtubs.
heat distortion temperature under load, which is the temperature at which a given deformation of a beam occurs for a standard load. A high deflection temperature indicates good resistance to creep. Glassy State Below the glass temperature Tg, the linear amorphous polymer becomes hard, brittle, and glass-like. This is again not a fixed temperature but a range of temperatures.
initiator is a kind of chemical required in addition polymerization to initiate monomer to start polymerizing reaction. In condensation polymerization, a relatively small molecule (such as water, ethanol, methanol etc.) is formed as a result of the polymerization reaction.
Question 1 What are linear and branched polymers? Can thermoplastics be branched? A linear polymer consists of spaghetti-like molecular chains. In a branched polymer, there are primary polymer chains and secondary offshoots of smaller chains that stem from these main chains.
Degree of Polymerization in general, for a given type of thermoplastic (e.g., polyethylene) the tensile strength, creep resistance, impact toughness, wear resistance, and melting temperature all increase with increasing average molecular weight or degree of polymerization.
Question 5
Hale Waihona Puke What do the terms condensation polymerization, addition polymerization, initiator mean ? Addition polymerization and condensation polymerization are the two main ways to conduct “polymerization”. The polymers derived from these processes are known as addition and condensation polymers, respectively.
At very high temperature, the covalent bonds between the atoms in the linear chain may be destroyed, and the polymer may burn or char. In thermoplastics decomposition occurs in the liquid state, in thermosets the decomposition occurs in the solid state. This temperature Td is the degradation (or decomposition) temperature.
Therefore, the degree of polymerization is: 250000/( ) = ( )MMA molecules per average chain
Question 11
Explain what the following terms mean: decomposition temperature, heat distortion temperature, glass temperature, and melting temperature. Why is it that thermoplastics do not have a fixed melting or glass temperature.
The formation of the most common polymer, polyethylene (PE), from ethylene molecules is an example of addition or chain-growth polymerization. Ethylene, a gas, is the monomer (single unit). The two carbon atoms are joined by a double covalent bond. Each carbon atom shares two of its electrons with the second carbon atom, and two hydrogen atoms are bonded to each of the carbon atoms.
Thermoplastic elastomers are a special group of polymers. They have the processing ease of thermoplastics and the elastic behavior of elastomers.
Question 3 What electrical and optical applications are polymers used for? Explain using examples. We use polymers in photochromic lenses. Plastics are often used to make electronic components because of their insulating ability and low dielectric constant. More recently, significant developments have occurred in the area of flexible electronic devices based on the useful piezoelectricity, semiconductivity, optical and electro-optical properties.
Question 2 Define (a) a thermoplastic, (b ) thermosetting plastics, (c) elastomers, and (d) thermoplastic elastomers. Thermoplastics are composed of long chains produced by joining together monomers; they typically behave in a plastic, ductile manner. The chains may or may not have branches. Thermosetting polymers are composed of long chains (linear or branched) of molecules that are strongly cross-linked to one another to form threedimensional network structures.