Answer:
a. Cash payback period years = 6 years
b. Annual rate of return = 9.67%
Step-by-step explanation:
(a) Compute the cash payback period for the new hoist. Cash payback period years
Total cost of automobile hoist = Purchase cost + Installation costs + freight charges = $34,000 + $4,200 + $800 = $39,000
Weekly profit or cash inflow = (Muffler selling price per unit - Muffler cost per unit - Muffler labor cost per unit) * Number of extra muffler per week = ($77 - $38 - $14) * 5 = $125
Annual cash inflow = $125 * 52 weeks = $6,500
Cash payback period years = Total cost of automobile hoist / Annual cash inflow = $39,000 / $6,500 = 6 years
(b) Compute the annual rate of return for the new hoist
Annual depreciation expenses = (Total cost of automobile hoist - Estimated salvage value) / Useful years = ($39,000 - $3,400) / 8 = $4,450
Expected annual income = Annual cash inflow - Annual depreciation expenses = $6,500 - $4,450 = $2,050
Average investment = (Total cost of automobile hoist + Salvage value) / 2 = ($39,000 + $3,400) / 2 = $21,200
Annual rate of return = Expected annual income / Average investment = $2,050 / $21,200 = 0.0967, or 9.67%