Perform a PW replacement study (hand and spreadsheet solutions, if instructed) from the information shown using an after-tax MARR = 12% per year, Te = 35%, and a study period of 4 years. (Assume that the assets will be salvaged at their original salvage estimates. Since no revenues are estimated, all taxes are negative and considered "savings" to the alternative.) All monetary values are in $1000units.

Defender Challenger -45-24 First cost, S1000 Estimated Sat purchase, $1000 Market value now, $1000 AOC, $1000 per year Depreciation method Recovery period, years Useful life, years Years owned 5 35 -8 MACRS SL