show work please

2. (2 points) Suppose that an asset with a cost basis of $100,000 and an ADS recovery period of five years is being depreciated under the Alternate Depreciation System (ADS) of MACRS, as follows: Year 3 4 5 6 $10,00* $20,000 $20,000 $20,000 $20,000 $10,000 Depreciation Deduction If the firm's effective income tax rate remains constant at 30% during this six-year period, what is the PW of after-tax savings resulting from depreciation when MARR = 15% per year (after taxes)