AgriGrow can invest in a 100-day short-term project with similar cash flows to those in problem 23 costing \($90,000\) to improve customer service. They believe the return on the project will be a net increase in sales of \($37,000\) per year over 3 years and of \($43,000\) in the fourth year. AgriGrow’s marginal tax rate is 40 percent, and MARR is 10 percent on the after-tax cash flows.

a. Develop tables using a spreadsheet to determine the ATCF for each year and the after-tax PW, AW, IRR, and ERR after 4 years.

b. Compare the results of Part a with those of Problem 23b, where MACRS-GDS is used. Explain the differences.