Foz Co Investment Proposals Question

I’m studying for my Accounting class and need an explanation.

Foz Co. is considering 4 investment proposals (A,B,C,D), The following table provides data concerning each of these investments. Compute the missing information pertaining to each investment. (round percentage answers to one decimal place)

Investment  Cost

50,000

50,000

49,800

?

Est. Salvage Value 

8,000

5,000

?

4,000

Average Estimated 

9,000

?

5,650

4,500

Return on Average Investment

?

28%

20%

15%