The following data are accumulated by Lone Peak Inc. in evaluating two competing capital investment proposals: 3D Printer Truck Amount of investment $20,000 $32,000 9 years Useful life 4 years Estimated residual value Estimated total income over the useful life $2,800 $16,560 Determine the expected average rate of return for each proposal. If required, round your answers to one decimal place. 3D Printer Truck