Your company bought a machine for $48,000 three years ago. The machine falls into the 7-year MACRS category and could be sold today for $28,800. A replacement machine could be bought and installed for $72,000. Your marginal tax rate is 34%. What is the current book value of the original machine? Use table A1 in IRS publication 946 (https://www.irs.gov/pub/irs-pdf/p946.pdf#page=71) to look up the depreciation rates for each year. What are the after-tax proceeds from the sale of the old machine?