$1,000, has an overall efficiency of 45.7%, and delivers 12.2hp. Both pumps have a useful life of five years and will be sold at that time. (Remember 1hp=0.748kW.) actual market value of $410, and pump B has an actual market value of $210 of electricity is $0.04kWh, and the pumps are subject to a study period of five years. Click the icon to view the GDS Recovery Rates (rk) for the 3 -year property class The IRR of the incremental investment is (Round to one decimal place.) More Info $1,000, has an overall efficiency of 45.7%, and delivers 12.2hp. Both pumps have a useful life of five years and will be sold at that time. (Remember 1hp=0.748kW.) actual market value of $410, and pump B has an actual market value of $210 of electricity is $0.04kWh, and the pumps are subject to a study period of five years. Click the icon to view the GDS Recovery Rates (rk) for the 3 -year property class The IRR of the incremental investment is (Round to one decimal place.) More Info