I need typed solution with explanation otherwise I will report to your answer and don't use AI BOT. Explain step by step i will thumb up.

Legend Service Center just purchased an automobile hoist for $31,700. The hoist has an 8-year life and an estimated salvage value of $3,400. Installation costs and freight charges were $3,800 and $900, 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 $38, and the labor cost to install a muffler 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, e.g. 10.52%.) Annual rate of return %