Average rate of return Determine the average rate of return for a project that is estimated to yield total income of $261,120 over 6 years, has a cost of $467,800, and has a $76,200 residual value. Round to the nearest whole number. A project has estimated annual net cash flows of $30,500. It is estimated to cost $115,900. Determine the cash payback period. Round your answer to one decimal place. years