Calculate the IRR and NPV for Projects X and Y. Assume that WACC =10%. Maris and Company can purchase an asset that costs $1 million and returns $150,000 per year for 10 years. Both costs and returns are on an after-tax basis. Assuming that the required return is 10% determine the following: a. payback period b. discounted payback period c. IRR d. NPV e. PI