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Question 4 (25 points): An asset (5year property class) will be purchased for $100,000 (year 0). It will produce annual benefits of $80,000 per year (starting in year 1) for 6 years, after which time it will have a salvage value of zero and will be retired. The annual operating expenses are $15,000 (starting in year 1 through year 6). Use MACRS depreciation (Tables in Chapter 11) and the corporate income tax rate in Table 12-1 for calculations. Calculate the: (1) Before tax cash ows (2) Depreciation each year (3) Aftertax cash ows (4) Before tax rate of return (5) After tax rate of return