For the cash flows shown, use an annual worth comparison and an interest rate of 8% per year. Determine the alternative that is economically the best. - 90,000 - 40,000 First cost, $ Annual cost, $/year Overhaul every 10 years, $ Salvage value, $ Life, years - 400,000 - 650,000 -20,000 -13,000 - 80,000 25,000 200,000 100 | 7,000 3