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suppose we are thinking about replacing an old computer with anew one. the old one cost $1,800.000; the new one will cost,$2183.000. the new machine will be depreciated straigth line tozero over its five year life. it will probably be worth about$540.000 after five years. the old computer is being depreciated ata rate of $408.000 per year. it will be completely written off inthree years. if we dont replace it now, we will have to replace itin two years. we can sell it now for 612000; in two years it willprobably be worth $180000. the new machine will save us $359000 peryear in operating costs. the tax rate is 22 percent and thediscount rate is 9 percent. a. calculate the EAC for the oldcomputer and the new computer. a2. what is the NPV of the decisionto replace the computer now?