Answer: $57,101.73
Explanation:
First find the present value of the cash inflows. The $32,000 is a constant payment so is an annuity. The net working capital will be realized at the end of the project as well.
Present value of cash inflows = (32,000 * Present value interest factor of an annuity, 4 years, 12%) + 3,000/ (1 + 12%)⁴
= (32,000 * 3.0373) + 1,906.55
= $99,101.73
NPV = Present value of inflows - Outflows
= 99,100.15 - (39,000 + 3,000)
= $57,101.73