A mechanical engineer at Anode Metals is considering five equivalent projects, some of which have different life expectations. Salvage value is nil for all alternatives. Assuming that the company’s MARR is 13% per year, determine which should be selected (a) if they are independent, and (b) if they are mutually exclusive. (c) Explain why your selection in part (b) is correct.
 FIGURE 1.png)
a) Select C and D with i* values exceeding MARR (rows 21 and 22).
(b, c) Select C. It is the alternative with the largest investment that has the extra investment
justified over another acceptable alternative, DN, in this case.
 ANSWER.png)
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