The following data are accumulated by Lone Peak Inc. in evaluating two competing capital investment proposals: 3D Printer Truck Amount of investment $72,000 $64,000 Useful life 4 years 5 years Estimated residual value Estimated total income over the useful life $6,480 $12,000 Determine the expected average rate of return for each proposal. If required, round your answers to one decimal place. 3D Printer Truck