3. Pilot Plus Pens is considering when to replace its old machine. The replacement costs $3 million now and requires maintenance costs of $500,000 at the end of each year during the economic life of five years. At the end of the years the new machine would have a salvage value of $500,000. It will be fully depreciated by the straight-line method. The corporate tax rate is 34 percent and the appropriate discount rate is 12 percent. Maintenance cost, salvage value, depreciation and book value of the existing machine are given as follows. Year Maintenance Book Value Salvage Depreciation (end of year) 0 $400,000 $2,000,000 $200,000 $1,000,000 1. 1,500,000 1.200,000 200,000 800.000 2. 1,500,000 800,000 200,000 600,000 3. 2,000,000 600,000 200,000 400,000 2,000,000 400,000 200,000 200,000 The company is assumed to cam a sufficient amount of revenues to generate tax shields from depreciation. When should the company replace the machine