A company is considering the purchase of new equipment costing $91,000. The machine has a useful life of four years and no salvage value. The company requires a 12% return on its investments. The factors for the present value of an annuity of 1 for different periods follow:

Assuming all revenue is to be received at the end of each year, what are the net cash flows for this investment if net present value equals ($11,790)?

Please explain!