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 $24,000 4 years Project Z $28,000 0 5 years 0 $2,160 21 $5,250 Determine the expected average rate of return for each project. Round your answers to one decimal place. Project A Project Z % %