abc corp. purchased a machine costing $10,000 for its manufacturing plant at austin. the machine has a useful life of 5 years. the revenues generated by the machine and maintenance costs for the 5 years are given below. years 1-3 years 4-5 revenue $ 6,000 $5,000 maintenance costs $ 1,000 $3,000 the company uses the straight-line method for depreciation and assumes zero salvage when computing the depreciation charges for this machine. in fact, due to the shortage of this equipment in the market, the actual salvage for the machine will be $1,000 at the end of 5 years. the tax rate is 50% for all incomes (including the capital gain on the salvage value). a. compute the before and after tax flows for this company associated with this project. b. do this problem assuming double rate declining balance depreciation.