Answer: a. $44,617
Step-by-step explanation:
The Internal Rate of Return brings the NPV of a project to zero which means that the cost of the project will be the Net present value of the cash inflows using the IRR as the discount rate.
This is a constant payment so can be treated as an annuity.
Present value of annuity = Annuity * Present value interest factor of annuity, 4 years , 13%
= 15,000 * 2.9745
= 44,617.5
= $44,617 approx