. An investment costing $50,000 promises an after tax cash flow of $18,000 per year for 6 years. Respond to each of the following using the given scenario:

a. Find the investment's accounting rate of return and its payback period.

b. Find the investment's net present value at a 15% discount rate.

c. Find the investment's profitability index at a 15% discount rate.

d. Find the investment's internal rate of return.

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