6. Cairo Corporation has the following information about the purchase of a new piece of equipment: (35 points) Cash revenues less cash expenses Cost of equipment Salvage value at the end of the 8th year Increase in working capital requirements Tax rate Life The cost of capital is 13 percent. $200,000 per year $620,000 $60,000 $140,000 I 25 percent 8 years b. Calculate the following assuming that depreciation expense is $160,000, $140,000, $120,000, $100,000, $80,000, $60,000, $40,000 and $20,000 for years 1 through 8, respectively: Calculate the after-tax cash flows for each of the eight years. ii. Calculate the after-tax payback period. iii. Calculate the net present value (NPV). iv. Calculate the internal rate of return (IRR)