urgent please

CAN Company invested $120,000 on an asset with the depreciable life of 6 years. They can earn $36,000 per year from this investment for 6 years. Asset has a negligible or zero MV at the end of its useful life. No other expense can be deducted for this asset Published income tax rate is 20% on annual taxable income. Use after-tax MARR of 15% per year, and straight line depreciation method. a) Net Income Before Tax? b) Net Income After Tax? c) After Tax Cash Flow? d) Is it profitable investment after taxes