《运营管理》课后习题答案
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Chapter 02 - Competitiveness, Strategy, and Productivity
3. (1) (2) (3) (4) (5) (6) (7)
Week Output Worker
Cost@
$12x40
Overhead
********
Material
Cost@$6
Total
Cost
MFP
(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 increased by 31.25% ((21-16)/16).
Multifactor productivity increased by 4.5% ((.93-.89)/.89).
*Machine Productivity
Before: 80 ÷ 40 = 2 carts/$1.
After: 84 ÷ 50 = 1.68 carts/$1.
Productivity increased by -16% ((1.68-2)/2)
Chapter 03 - Product and Service Design
6. Steps for Making Cash Withdrawal from an ATM
1. Insert Card: Magnetic Strip Should be Facing Down
2. Watch Screen for Instructions
3. Select Transaction Options:
1) Deposit
2) Withdrawal
3) Transfer
4) Other
4. Enter Information:
1) PIN Number
2) Select a Transaction and Account
3) Enter Amount of Transaction
5. Deposit/Withdrawal:
1) Deposit —place in an envelope (which you’ll fin d 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 transaction record)
8.
Chapter 04 - Strategic Capacity Planning for Products and Services
2. %80capacity
Effective output
Actual Efficiency ==
Actual output = .8 (Effective capacity) Effective capacity = .5 (Design capacity) Actual output = (.5)(.8)(Effective capacity) Actual output = (.4)(Design capacity) Actual output = 8 jobs Utilization = .4
capacity
Design output
Actual =
n Utilizatio
jobs 204
.8
capacity Effective output Actual Capacity Design ===
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 processing time by machine
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
machine
181.000
,150000
,122machine 238.1000
,150000
,208machine
224.1000
,150000
,186≈==
≈==≈==C B A N N N
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” machine at $80,000.
b. Total cost for each type of machine:
A (2): 186,000 min ÷ 60 = 3,100 hrs. x $10 = $31,000 + $80,000 = $111,000
B (2) : 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 Selection and Facility Layout
3.