The management of River Corporation is considering the purchase of a new machine costing $380,000. The company's desired rate of return is 6%. The present value factor for an annuity of $1 at interest of 6% for 5 years is 4.212. In addition to the foregoing information, use the following data in determining the acceptability of this investment: Year Operating Income Net Cash Flow 1 $20,000 $95,000 2 20,000 95,000 3 20,000 95,000 4 20,000 95,000 5 20,000 95,000 The cash payback period for this investment is