A pump is required for 10 years at a remote location. The pump can be driven by an electric motor if a power line is extended to the site. Otherwise, a gasoline engine will be used. Use an annual cash flow analysis to determine, based on the following data and a 10% interest rate, how the pump should be powered.

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Gasoline Electric $2400 1200 First cost Annual operating cost Annual maintenance Salvage value Life, in years $6000 750 50 600 10 300