1. The table below gives the initial investment (the negative numbers at "Year 0") for two projects. Compute the payback period, the NPV, and the IRR using Excel. Then rank the two projects based on each of these three criteria, and discuss which projects should be funded based on your computations.

Firm Cost of Capital:	11%
Year	Project A	Project B
0	-100,000	-150,000
1	25,000	30,000
2	25,000	30,000
3	25,000	90,000
4	25,000	20,000
5	25,000	20,000
6	25,000	20,000

1. The ACME Umbrella Company is deciding between two different umbrella factories. Both factories will cost $500,000 to get started. However, the cash flows for each factory will depend on whether the next five years are rainier than average or sunnier than average. Factory A will have cash flows of $130,000 per year for the next five years if the weather is sunnier than average. But if it is rainier than average the cash flows will be $150,000 per year for the next five years. Factory B will have cash flows of $100,000 per year for the next five years if it is sunnier than average, but if it is rainier than average it will have cash flows of $200,000 per year. ACME has a cost of capital of 9%. Based on this information, calculate the following:
   1. Calculate the NPV for both factories and for both scenarios (rainy versus sunny). What is the range of NPV for each factory based on your scenario analysis?
   2. Based on your answer to a) above, do you think ACME should use the same discount rate of 9% for each factory? Or should they use a risk-adjusted discount rate (RADR)? If so, which factory should have a higher RADR? Explain your answer with references to the background readings.
2. The Carpet Company's shareholders require an 11% return on their investment, and stock makes up 50% of the company's capital structure. The other half of the company's capital structure consists of debt. The interest rate on this debt is 7%. Assume the corporate tax rate is 21%. What is carpet company's WACC?
3. Assume the Carpet Company's corporate tax rate falls to 0%. The company borrows money to buy back and retire half of its outstanding common stock. What happens to the company's WACC?