An investment costing $100,000 promises an after-tax cash flow of $36,000 per year for 6 years.

a. Find the investments accounting rate of return and its payback period.

b. Find the investments net present value at a 15-percent discount rate.

c. Find the investments benefit-cost ratio (profitability index) at a 15-percent discount rate.

d. Find the investments internal rate of return.

e. Assuming the required rate of return on the investment is 15 percent, which of the above figures of merit indicate the investment is attractive? Which indicate it is unattractive?