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A special-purpose 30-horsepower electric motor has an efficiency of 89%. Its purchase and installation price...

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Accounting

A special-purpose 30-horsepower electric motor has an efficiency of 89%. Its purchase and installation price is $2,100. A second 30-horsepower high-efficiency motor can be purchased for $3,100, and its efficiency is 93%. Either motor will be operated 4,500 hours per year at full load, and electricity costs $0.09 per kilowatt-hour (kWh). MARR=18% per year, and neither motor will have a market value at the end of the eight-year study period.

a. The PW of the motor with the efficiency of 89% is $=?

b. The PW of the motor with the efficiency of 92% is $=?

c. Which motor should be chosen?

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