I only need the answer to question 26-6.

Compute the payback period for each of these two separate investments (round the payback period to two decimals). a. A new operating system for an existing machine is expected to cost $520,000 and have a useful life of six years. The system yields an incremental after-tax income of $150,000 each year after deducting its straight-line depreciation. The predicted salvage value of the system is $10,000. b. A machine costs $380,000, has a $20,000 salvage value, is expected to last eight years, and will gener- ate an after-tax income of $60,000 per year after straight-line depreciation. Exercise 26-5 Payback period computation; even cash flows P1 Refer to the information in Exercise 26-5. Assume the company requires a 10% rate of return on its invest- ments. Compute the net present value of each potential investment. (Round to the nearest dollar.) Exercise 26-6 Net present value P3