Legend service center just purchased an automobile hoist for $32,400. the hoist has an 8-year life and an estimated salvage value of $3,000. installation costs and freight charges were $3,300 and $700, respectively. legend uses straight-line depreciation. the new hoist will be used to replace mufflers and tires on automobiles. legend estimates that the new hoist will enable his mechanics to replace 5 extra mufflers per week. each muffler sells for $72 installed. the cost of a muffler is $36, and the labor cost to install a muffler is $16. (a) compute the cash payback period for the new hoist. (round answer to 2 decimal places, e. g. 10.50.) (b) compute the annual rate of return for the new hoist. (round answer to 1 decimal place, e. g. 10.5.)