a) Make up an investment that has an IRR of 25% assuming the required return is 30%.

b) Make up an investment that has an IRR of 25% assuming the required return is 20%. By "make up," I mean use Excel or pen and paper to write down a timeline (as many or as few years as you want) and the cash flows, positive or negative, each year. Please answer both a) and b).

Please show all work.