After the long drought of 1992, the manager of Long Branch Farm is considering the installation of an irrigation system. The system has an invoice price of $100,000 and will cost an additional $15,000 to install. It is estimated that it will increase revenues by $20,000 annually, although operating expenses other than depreciation will also increase by $5,000. The system will be depreciated straight-line over its depreciable life (5 years) to a zero salvage value. The system can actually be sold for an estimated $25,000 at the end of 5 years. If the tax rate on ordinary income is 40 percent and the firm’s required rate of return is 16 percent, should the firm purchase the system? Why? Show your work.