Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

ENGINEERING ECONOMIC ANALYSIS CHAPTER 8 PR 14: The following mutually exclusive

ID: 1193865 • Letter: E

Question

ENGINEERING ECONOMIC ANALYSIS CHAPTER 8 PR 14:

The following mutually exclusive alternatives have no salvage value after 10 years.

A

B

C

D

FIRST COST

$7500

$5000

$5000

$8500

UNIFORM ANNUAL BENIFIT

1600

1200

1000

1700

COMPUTED ROR

16.8%

20.2%

15.1%

15.1%

a) Construct a truth table for interest rates from 0-100%.

b) Using 8% MARR, which alternative should be selected?

************PLEASE PROVIDE EXCEL FORMULAS IF TABLE IS USED FOR CALCULATIONS*******

I am having trouble doing this....

A

B

C

D

FIRST COST

$7500

$5000

$5000

$8500

UNIFORM ANNUAL BENIFIT

1600

1200

1000

1700

COMPUTED ROR

16.8%

20.2%

15.1%

15.1%

Explanation / Answer

Ans:

a) Choice table NPV Interest rate A B C D Choice 0%        8,500.00        7,000.00        5,000.00        8,500.00 A or B 5%        4,854.78        4,266.08        2,721.73        4,626.95 A 8%        3,236.13        3,052.10        1,710.08        2,907.14 A 10%        2,331.31        2,373.48        1,144.57        1,945.76 B 15%           530.03        1,022.52              18.77              31.91 B 20%         (792.04)              30.97         (807.53)     (1,372.80) B 25%     (1,787.19)         (715.40)     (1,429.50)     (2,430.14) B 30%     (2,553.54)     (1,290.15)     (1,908.46)     (3,244.38) B 35%     (3,155.93)     (1,741.95)     (2,284.96)     (3,884.43) B 40%     (3,638.29)     (2,103.71)     (2,586.43)     (4,396.93) B 45%     (4,030.99)     (2,398.24)     (2,831.87)     (4,814.17) B 50%     (4,355.49)     (2,641.62)     (3,034.68)     (5,158.96) B 55%     (4,627.25)     (2,845.44)     (3,204.53)     (5,447.71) B 60%     (4,857.59)     (3,018.19)     (3,348.49)     (5,692.44) B 65%     (5,054.92)     (3,166.19)     (3,471.82)     (5,902.10) B 70%     (5,225.62)     (3,294.22)     (3,578.51)     (6,083.48) B 75%     (5,374.59)     (3,405.94)     (3,671.62)     (6,241.75) B 80%     (5,505.60)     (3,504.20)     (3,753.50)     (6,380.95) B 85%     (5,621.66)     (3,591.24)     (3,826.03)     (6,504.26) B 90%     (5,725.12)     (3,668.84)     (3,890.70)     (6,614.19) B 95%     (5,817.91)     (3,738.43)     (3,948.69)     (6,712.78) B 100%     (5,901.56)     (3,801.17)     (4,000.98)     (6,801.66) B b) At MARR= 8%, A is the best alternative as shown in above table