The following data are accumulated by Watershed Inc. in evaluating two competing capital investment proposals:

Project A Project Z

Amount of investment $$80,000$ $$64,000$

Useful life $4$ years $9$ years

Estimated residual value $00$

Estimated total income over the useful life $$6,400$ $$20,160$

Determine the expected average rate of return for each project. Round your answers to one decimal place.