A five year project has a projected net cash flow of $$15,000,$ $$25,000,$ $$30,000,$ $$20,000,$ and $$15,000$ in the next five years. It will cost $$50,000$ to implement the project. If the discount rate is $0\mathrm{.}20,$ what is ROI and payback? The NPV is $12895.$ what is the roi? I know the correct answer is $26\%$ but do not know how thet got to that