(10 points) 11. Mars Inc. is considering the purchase of a new machine that will lars Inc. is considering the purchase of a new machine that will reduce manufacturing co $20,000 pre-tax. Mars will use straight-line deprecation to depreciate the machine over the useful life of 6 years. It expects to sell the machine at the end of year 5 for $8,000. The firm expect to increase net operating working capital by $15,000 when the machine is installed (t-0). Mars marginal tax rate is 40%, and it has a WACC of 12%. If the machine costs $60,000, what is the project's NPV