The management of Kunkel Company is considering the purchase of a $21,000 machine that would reduce operating costs by $5,000 per year. At the end of the machines five-year useful life, it will have zero salvage value. The companys required rate of return is 12%. Click here to view Exhibit 7B-1 and Exhibit 7B-2, to determine the appropriate discount factor(s) using table. Required: Determine the net present value of the investment in the machine. What is the difference