4. (30 points) Calculate the payback, discounted payback, MIRR, NPV and Profitability index on the following series of cashflows. The cost of capital for the firm is 15%. You do not need to calculate the IRR. Year 0 1 2 3 4 Cashflow (700) 400 500 300 [20 times age] Note: The year zero cashflow is negative because that represents the cost of the project. The rest of the cashflows are positive including year 4.