The initiative to replace old fans with new energy-efficient fans should be adopted because it will pay for itself before the end of the new fans' useful lives. Old fan kilowatt-hour consumption per unit. New fan kilowatt-hour consumption per unit Kilowatt-hour savings per unit ... Number of operating hours per day Number of operating days per year.... Number of units ........ Kilowatt-hour savings per year. Metered utility rate per kwh. Annual utility cost savings..... 0.8* (0.5)** 0.3 x 8 * 180 x 80 34,560 *$0.10 $3,456 BBBBBBBBBBB What about the initiative to replace gasoline-powered ATVs with electric powered ATVs (Show computations): The initiative to replace old fans with new energy-efficient fans should be adopted because it will pay for itself before the end of the new fans' useful lives. Old fan kilowatt-hour consumption per unit. New fan kilowatt-hour consumption per unit Kilowatt-hour savings per unit ... Number of operating hours per day Number of operating days per year.... Number of units ........ Kilowatt-hour savings per year. Metered utility rate per kwh. Annual utility cost savings..... 0.8* (0.5)** 0.3 x 8 * 180 x 80 34,560 *$0.10 $3,456 BBBBBBBBBBB What about the initiative to replace gasoline-powered ATVs with electric powered ATVs (Show computations)