运营管理》-课后习题答案
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Chapter 02 - Competitive ness. Strategy, and Productivity
3. (1) (2) (3) (4) (5) (6) (7)
Worker Overhead Material Total MFP Week Output Cost@
$12x40
Cost @1.5 Cost@$6 Cost (2) (6)
1 30,000 2,880 4,320 2,700 9,900 3.03
2 33,600 3,360 5,040 2,820 11,220 2.99
3 32,200 3,360 5,040 2,760 11,160 2.89
4 35,400 3,840 5,760 2,880 12,480 2.84
*refer to solved problem #2
Multifactor productivity dropped steadily from a high of 3.03 to about
2.84.
4. a. Before: 80 5 =16 carts per worker per hour.
After: 84 4 =21 carts per worker per hour.
b. Before: ($10 x
5 : =$50) + $40 = $90; hence 80 +$90 = :.89
carts/$1
After: ($10 x 4 = $40) + $50 = $90; hence 84 +$90 = :.93
carts/$1
c. Labor productivity in creased by 31.25% ((21-16)/16).
Multifactor productivity in creased by 4.5% ((.93-.89)/.89).
*Machi ne Productivity
Before: 80 +40 = 2 carts/$1.
After: 84 +50 = 1.68 carts/$1.
Productivity in creased by -16% ((1.68-2)/2)
Chapter 03 - Product and Service Desig n
6. Steps for Maki ng Cash Withdrawal from an ATM
1. Insert Card: Magnetic Strip Should be Facing Down
2. Watch Scree n for I nstructio ns
3. Select Tran sact ion Opti ons:
1) Deposit
2) Withdrawal
3) Tran sfer
4) Other
4. En ter In formati on:
1) PIN Number
2) Select a Tran sacti on and Acco unt
3) En ter Amount of Tran sact ion
5. Deposit/Withdrawal:
1) Deposit ——place in an envelope (which you ' ll find near or in the
ATM) and insert it into the deposit slot
2) Withdrawal —lift the “Withdrawal Door, ” being careful to remove all cash
6. Remove card and receipt (which serves as the tra nsact ion record)
8.
Chapter 04 - Strategic Capacity Pla nning for Products and
Services
2. Efficiency Actual output8Q% Effective capacity
Actual output = .8 (Effective capacity)
Effective capacity = .5 (Desig n capacity)
Actual output = (.5)(.8)(Effective capacity)
Actual output = (.4)(Desig n capacity)
Actual output = 8 jobs
Utilizati on = .4
Utilizatio n Actual output Desig n
capacity
Design Capacity
Actual output 8 Effective capacity .4
20 jobs
5
10. a. Given: 10 hrs. or 600 min. of operating time per day.
250 days x 600 min. = 150,000 min. per year operating time. Total process ing time by machi ne Product
A B C 1 48,000 64,000 32,000 2 48,000 48,000 36,000 3 30,000 36,000 24,000 4
60,000 60,000 30,000 Total
186,000
208,000
122,000
You would have to buy two “A machines at a total cost of $80,000, or two
“ B' machines at a total cost of $60,000, or one
“ C "
machi ne at $80,000.
b. Total cost for each type of machi ne:
A (2): 186,000 min 60 = 3,100 hrs. x $10 = $31,000 + $80,000 = $111,000
B ⑵:208,000 60 = 3,466.67 hrs. x $11 = $38,133 + $60,000 = $98,133 C(1): 122,000
60 = 2,033.33 hrs. x $12 = $24,400 + $80,000 = $104,400
Buy 2 Bs — these have the lowest total cost.
Chapter 05 - Process Selecti on and Facility Layout
3.
N A 186,000 150,000
N B
208,000 150,000
N C 122,000 150,000
1.24 2 machi ne 1.38 2 machine .81 1 mach ine
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