Consider the following three mutually exclusive alternatives:

For what range of values of MARR is Alt. C the preferred alternative? Put your answer in the following form: "Alternative C is preferred when ____ % ‰¤ MARR ‰¤ _____ %.

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First cost Uniform annual $200 $300 $600 59.7 165.2 Useful life, End-of-useful-life Computed rate benefit n years salvage valuc of return 15% 9% 1 1.7%