Average Rate of Return The following data are accumulated by Lone Peak Inc. in evaluating two competing capital investment proposals: 3D Printer Truck Amount of investment $52,000 $44,000 Useful life 4 years Estimated residual value 0 Estimated total income over the useful life $8,320 $12,100 5 years Determine the expected average rate of return for each proposal. If required, round your answers to one decimal place. 3D Printer % Truck %