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 $80,000 $20,000 Useful life 4 years 7 years Estimated residual value Estimated total income over the useful life $6,400 $4,900 Determine the expected average rate of return for each proposal. If required, round your answers to one decimal place. 3D Printer 0 0 % Truck %