(Clid the icon lo view the present valve of 51 tactors) Clikk the ican lo viow the pectent value annity of 51 tactors) The NPV is 3 Required 1. Calculate NPV. 2. Calculate IRR 3. Calculate AARR based on net initial investment 4. Calculate AARR based on average investment. 5. You have the authority to make the purchase decision. Why might you be reluctant to base your decision on the DCF methods