The following data are accumulated by Lone Peak Inc. in evaluating two competing capital investment proposals: 3D Printer Truck Amount of investment $80,000 $56,000 Useful life 4 years 7 years Estimated residual value Estimated total income over the useful life $12,800 $21,560 Determine the expected average rate of return for each proposal. If required, round your answers to one decimal place. 3D Printer % Truck %