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1. An engineer must choose between two technically equivalent alternatives, A an

ID: 3223102 • Letter: 1

Question

1.    An engineer must choose between two technically equivalent alternatives, A and B. Based upon the data in the table below and an interest rate of 9%, which alternative should be selected?

A

B

First Cost

$3,000

$6,000

Annual Maintenance

$500

$300

End of Useful Life Salvage Value

$700

$1,000

Useful Life

5 years

15 years

2.    a. Choose A; we want to maximize the costs
b. Choose B; we want to minimize the costs
c. Choose A; we want to minimize the costs
d. Choose B; we want to maximize the costs

Choose the right answer and show solution( do not use excel)

A

B

First Cost

$3,000

$6,000

Annual Maintenance

$500

$300

End of Useful Life Salvage Value

$700

$1,000

Useful Life

5 years

15 years

Explanation / Answer

Solution:- option  b. Choose B; we want to minimize the costs .

Explanation:-   

EUAC = 6,000(A/P, 9%, 15) + 300 " 1,000(A/F, 9%, 15)=6,000(0.1241 )+ 300 " 1,000(0.0341) = $1,010.50

To minimize EUAC, select alternative B