Average Rate of Return The following data are accumulated by Watershed Inc. In evaluating two competing capital investment proposals: Project A Project Z Amount of Investment $52,000 $80,000 Useful life 4 years Estimated residual value 0 Estimated total income over the useful life $8,320 $37,800 Determine the expected average rate of return for each project. Round your answers to one decimal place. Project A Project 2 9 years 0