Consider two mutually exclusive projects: X and Y. Initial cash outlay for both projects are $10,000. Cash inflow from project X for years 1 to 4 are $6,500, $3,000, $3,000 and $1,000 respectively. Project Y has annual cash inflow of $3,500 for years 1 to 4. Compute the discount rates for each project for which their respective NPV is zero. based on this discount rate, which project should be accepted? (You must show your workings to support your answer)