Golab Roofing is considering the purchase of a crane that would cost $85,846, would have a useful life of 6 years, and would have no salvage value. The use of the crane would result in labor savings of $13,250 per year. The simple rate of return on the investment in the crane is closest to (Ignore income taxes.): \begin{tabular}{l} 18% \\ \hline 30% \\ \hline 15% \\ \hline 19% \end{tabular} Fast Food, Inc., has purchased a new donut maker. It cost $18,000 and has an estimated life of 10 years. The following annual donut sales and expenses are projected (Ignore income taxes.): Assume cash flows occur uniformly throughout a year except for the initial investment. The payback period on the new machine is closest to: 1.4 years 3.3 years 5 years 2.9 years