please solve the b) part of this question.

deterinine whether Billy and Mandy should undertake the investment. IRR, investment life, and cash inflows more than the firm's 15% cost of capital. Oak is currently considering a 10-year project that provides annual cash inflows of $10,000 and requires an initial invest- ment of $61,450. (Note: All amounts are after taxes.) a. Determine the IRR of this project. Is it acceptable? 17 Oak Enterprises accepts projects carning Assuming that the cash inflows continue to be $10,000 per year, how many additional years would the flows have to continue to make the project acceptable (that is, to make it have an IRR of 15%)? c. With the given life, initial investment, and cost of capital, what is the minimum annual cash inflow that the firm should accept