Average Rate of Return, Cash Payback Period, Net Present Value Method for a Service Company net cash flows of $68,000. The company's minimum desired rate of return for net present value analysis is 15%. Present Value of an Annuitv of $1 at Comnound Tnterest Compute the following: a. The average rate of return, giving effect to straight-line depreciation on the investment. If required, round your answer to one decimal place. % b. The cash payback period. current grading purpose