An investment has an installed cost of $528,800. The cash flows over the four-year life of the investment are projected to be $220,850, $237,450, $204,110, and $152,820.

If the discount rate is zero, what is the NPV?

If the discount rate is infinite, what is the NPV? (Negative amount should be indicated by a minus sign.)

At what discount rate is the NPV just equal to zero? (Round your answer to 2 decimal places. (e.g., 32.16))

IRR %____