Exercise 24-3 Payback period computation; straight-line depreciation LO P1 A machine can be purchased for $140,000 and used for five years, yielding the following net incomes. In projecting net incomes, straight-line depreciation is applied, using a five-year life and a zero salvage value. Year 1 Year 2 Year 3 Year 4 Year 5 Net income $ 9,500 $ 23,500 $ 64,000 $ 35,500 $ 94,000