The internal rate of return method is used by Testerman Construction Co. in analyzing a capital expenditure proposal that involves an investment of $53,838 and annual net cash flows of $18,000 for eoch of the five years of its useful life. Present Value of an Annulty of $1 at Comnnumd Taharact a. Determine o present value factor for an annuity of 51 which can be used in deternining the internal rate of return. If required, round your answer to three decimal piaces. b. Usina the factor determined in part (a) and the present valift of an annuity of $1 table above, determine the internal rate of return for the proposal