运营管理》课后习题答案.docx

运营管理》课后习题答案.docx

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运营管理》课后习题答案

Chapter02-Competitiveness,Strategy,andProductivity

3.

（1）

（2）

（3）

（4）

（5）

（6）

（7）

Week

Output

WorkerCost@

$12x40

OverheadCost@1.5

MaterialCost@$6

TotalCost

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

*refertosolvedproblem#2

Multifactorproductivitydroppedsteadilyfromahighof3.03toabout2.84.

4.a.Before:

805=16cartsperworkerperhour.

After:

844=21cartsperworkerperhour.

b.Before:

（$10x5=$50）+$40=$90;hence80÷$90=.89carts/$1.

After:

（$10x4=$40）+$50=$90;hence84÷$90=.93carts/$1.

c.Laborproductivityincreasedby31.25%（（21-16）/16）.

Multifactorproductivityincreasedby4.5%（（.93-.89）/.89）.

*MachineProductivity

Before:

80÷40=2carts/$1.

After:

84÷50=1.68carts/$1.

Productivityincreasedby-16%（（1.68-2）/2）

Chapter03-ProductandServiceDesign

6.StepsforMakingCashWithdrawalfromanATM

1.InsertCard:

MagneticStripShouldbeFacingDown

2.WatchScreenforInstructions

3.SelectTransactionOptions:

1）Deposit

2）Withdrawal

3）Transfer

4）Other

4.EnterInformation:

1）PINNumber

2）SelectaTransactionandAccount

3）EnterAmountofTransaction

5.Deposit/Withdrawal:

1）Deposit—placeinanenvelope（whichyou’llfindnearorintheATM）andinsertitintothedepositslot

2）Withdrawal—liftthe“WithdrawalDoor,”beingcarefultoremoveallcash

6.Removecardandreceipt（whichservesasthetransactionrecord）

8.

Technical

Requirements

Ingredients

Handling

Preparation

CustomerRequirements

Taste

√

√

Appearance

√

√

√

Texture/consistency

√

√

Chapter04-StrategicCapacityPlanningforProductsandServices

2.

Actualoutput=.8（Effectivecapacity）

Effectivecapacity=.5（Designcapacity）

Actualoutput=（.5）（.8）（Effectivecapacity）

Actualoutput=（.4）（Designcapacity）

Actualoutput=8jobs

Utilization=.4

10.a.Given:

10hrs.or600min.ofoperatingtimeperday.

250daysx600min.=150,000min.peryearoperatingtime.

Totalprocessingtimebymachine

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

000

208,000

122,000

Youwouldhavetobuytwo“A”machinesatatotalcostof$80,000,ortwo“B”machinesatatotalcostof$60,000,orone“C”machineat$80,000.

b.Totalcostforeachtypeofmachine:

A

（2）:

000min60=3,100hrs.x$10=$31,000+$80,000=$111,000

B

（2）:

208,00060=3,466.67hrs.x$11=$38,+$60,000=$98,

C

（1）:

122,00060=2,033.33hrs.x$12=$24,400+$80,000=$104,400

Buy2Bs—thesehavethelowesttotalcost.

Chapter05-ProcessSelectionandFacilityLayout

3

a

d

f

7

5

2

b

4

c

4

e

9

h

5

i

6

g

3.

Desiredoutput=4

Operatingtime=56minutes

Task

#ofFollowingtasks

PositionalWeight

A

4

23

B

3

20

C

2

18

D

3

25

E

2

18

F

4

29

G

3

24

H

1

14

I

0

5

a.Firstrule:

mostfollowers.Secondrule:

largestpositionalweight.

AssemblyLineBalancingTable（CT=14）

WorkStation

Task

TaskTime

TimeRemaining

FeasibletasksRemaining

I

F

5

9

A,D,G

A

3

6

B,G

G

6

–

–

II

D

7

7

B,E

B

2

5

C

C

4

1

–

III

E

4

10

H

H

9

1

–

IV

I

5

9

–

b.Firstrule:

Largestpositionalweight.

AssemblyLineBalancingTable（CT=14）

WorkStation

Task

TaskTime

TimeRemaining

FeasibletasksRemaining

I

F

5

9

A,D,G

D

7

2

–

II

G

6

8

A,E

A

3

5

B,E

B

2

3

–

III

C

4

10

E

E

4

6

–

IV

H

9

5

I

I

5

–

c.

a

b

d

c

f

1.

e

g

h

1.

4.

a.l.

2.MinimumCt=1.3minutes

Task

Followingtasks

a

4

b

3

c

3

d

2

e

3

f

2

g

1

h

0

WorkStation

Eligible

Assign

TimeRemaining

IdleTime

I

a

A

1.1

b,c,e,（tie）

B

0.7

C

0.4

E

0.3

0.3

II

d

D

0.0

0.0

III

f,g

F

0.5

G

0.2

0.2

IV

h

H

0.1

0.1

0.6

3.

4.

b.1.

2.Assigna,b,c,d,andetostation1:

2.3minutes[noidletime]

Assignf,g,andhtostation2:

2.3minutes

3.

4.

7.

1

5

4

3

8

7

6

2

Chapter06-WorkDesignandMeasurement

3.

Element

PR

OT

NT

AFjob

ST

1

.90

.46

.414

1.15

.476

2

.85

1.505

1.280

1.15

1.472

3

1.10

.83

.913

1.15

1.050

4

1.00

1.16

1.160

1.15

1.334

Total4.332

8.

A=24+10+14=48m