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General Food Company is considering replacing an old food dispenser which was pu

ID: 2793327 • Letter: G

Question

General Food Company is considering replacing an old food dispenser which was purchased 10 years ago at a cost of $26,000. It has a current market value of $6000. If the firm spends $2000 to recalibrate the dispenser, it would extend the life of the dispenser for another three years with the following estimated market values and operating costs: Year 0: Market value $6000; Overhaul $2000 Year 1: Market value $4300; O&M cost $3800 Year 2: Market value $2500; O&M cost $5100 Year 3: Market value $1000; O&M cost $6500 The firm`s MARR is 10%. Ignore any income tax effects for this problem. What is the remaining economic service life of the machine with the overhaul? Hint: consider the overhaul as one-time O&M cost in year 0. Enter your answer as an integer between 1 and 3.

Explanation / Answer

Year 0

Current market value

6000

Overhaul cost at Y0

2000

Total cost

8000

Particulars

Year1

Year 2

Year 3

O & M Costs

3800

5100

6500

Market value

4300

2500

1000

PVAF @ 10%

0.909091

0.826446

0.751315

Cumulative PVAF

0.909091

1.735537

2.486852

NPV if machine is kept at year 1

=(8000*-1)-3800*0.909+4300*0.909

=-7545.5

NPV if machine is kept at year 2

=(8000*-1)-3800*0.909-5100*0.826446+2500*0.826446

=-13602.9596

NPV if machine is kept at year 3

=(8000*-1)-3800*0.909-5100*0.826446-6500*0.751+1000*0.751

=-19799.5746

Since above NPV figures are relate to different periods, there are not comparable. To make them comparable we shall use concept of EAC as under:

EAC(Equivalent Annual Cost)=NPV/Cumulative PVAF

EAC of 1 year

=7545.5/0.909

=8300.880088

EAC of 2 year

=13602.96/1.736

=7835.806452

EAC of 3 year

=19799.574/2.489

=7954.830856

Since, EAC is lowest for 2 years, hence the machine's economic life is 2 years.

Year 0

Current market value

6000

Overhaul cost at Y0

2000

Total cost

8000

Particulars

Year1

Year 2

Year 3

O & M Costs

3800

5100

6500

Market value

4300

2500

1000

PVAF @ 10%

0.909091

0.826446

0.751315

Cumulative PVAF

0.909091

1.735537

2.486852

NPV if machine is kept at year 1

=(8000*-1)-3800*0.909+4300*0.909

=-7545.5

NPV if machine is kept at year 2

=(8000*-1)-3800*0.909-5100*0.826446+2500*0.826446

=-13602.9596

NPV if machine is kept at year 3

=(8000*-1)-3800*0.909-5100*0.826446-6500*0.751+1000*0.751

=-19799.5746

Since above NPV figures are relate to different periods, there are not comparable. To make them comparable we shall use concept of EAC as under:

EAC(Equivalent Annual Cost)=NPV/Cumulative PVAF

EAC of 1 year

=7545.5/0.909

=8300.880088

EAC of 2 year

=13602.96/1.736

=7835.806452

EAC of 3 year

=19799.574/2.489

=7954.830856

Since, EAC is lowest for 2 years, hence the machine's economic life is 2 years.