please help me

Wildhorse Service Center just purchased an automobile hoist for $37,300. The hoist has an 8 -year life and an estimated salvage value of $3,600. Installation costs and freight charges were $3,400 and $900, respectively. Wildhorse uses straight-line depreciation The new hoist will be used to replace muffers and tires on automobiles. Wildhorse estimates that the new hoist will cnable its mechanics to replace 5 extra mufflers per week. Each muffler sells for $73 installed. The cost of a muffer is $39, and the labor cost to install a mutfer is $14 (a) Compute the cash payback period for the new hoist. Cash payback period years (b) Compute the annual rate of return for the new hoist. (Round answer to 2 decimal places, es. 10.52X.) Annual rate of return