Internal rate of return???For the project shown in the following? table?, calculate the internal rate of return (IRR). Then? indicate, for the? project, the maximum cost of capital that the firm could have and still find the IRR acceptable. The? project's IRR is?

Initial investment $90,000 Year (t) Cash inflows 1 $40,000 2 $20,000 3 $15,000 4 $15,000 5 $50,000