no excel please. equations only

13. Two mutually exclusive projects are being considered: Project X requires $500 and results in a return amounting to a one-time-only profit of $1,000 five years from now. Project y also requires $500, but will return $170 per year for each of the next 5 years. Determine at what rate of return the two projects are equivalent and explain the significance of the intersection point of the two PW profiles for the selection of the preferred alternative