Average Rate of Return The following data are accumulated by Watershed Inc. in evaluating two competing capital investment proposals: Amount of investment Useful life Estimated residual value Estimated total income over the useful life Project A $52,000 Project Z $76,000 4 years 7 years 0 0 $6,760 $27,930 Determine the expected average rate of return for each project. Round your answers to one decimal place. Project A Project Z % %