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computer has no Mesa Company has been using an old-fashioned computer for many years. The c m salvage value. The company is considering buying a computer system at a cost new computer system will save $7,000 per year after taxes in cash (includin depreciation). If the company decides not t for an indefinite time. The new computer system will have an estimated useful life of 10 tax effects of o buy the new computer system, it can use the olds of t a. Compute the time-adjusted rate of return for the new computer system. b. The company is uncertain about the new computer system's 10-year useful life. Compute the time-adjusted rate of return for the new computer system if its useful life is (1) 6 years and (2) 15 years, instead of 10 years. Suppose the computer system has a useful life of 10 years, but the annual after-tax cost savings are only $4,500. Compute the time-adjusted rate of return. Assume the annual after-tax cost savings will be S7,500 and the useful life will be eight years. Compute the time-adjusted rate of return. c. d