Compute the net present value of each potential investment Assume the company requires a 10% rate of return on its investments. (EV of $1, PV of $1, EMA of $1 and PMA of $1) (Use appropriate factor(s) from the tables provided.) a. A new operating system for an existing machine is expected to cost $580,000 and have a useful life of six years. The system yields an incremental after-tax income of $230,000 each year after deducting its straight-line depreciation. The predicted salvage value of the system is $21,200. Cash Flow Select Chart Amount x PV Factor Present Value Annual cash flow Residual value Net present value