5) (35 points) Because of high operating and maintenance costs, a company is considering a replacement for an aging machine that has been fully depreciated for tax purposes. The new machine will have an initial cost of S50,000 and is expected to generate an annual savings of S10,000 in operating and maintenance costs. Its estimated salvage value at the end of its useful life of 4 years will be $20,000. The new machine is a MACRS- GDS 3-year property for calculating depreciation deductions. The effective tax rate is 40%. Use an after-tax MARR of 10% per year compounded annually. a) (25 points) For this new machine, determine the after-tax cash flow for each year of operation. Tax ATCE b) (10 points) Use present worth analysis to determine if the company should replace the existing machine