The following data are accumulated by Lone Peak Inc. In evaluating two competing capital investment proposals: 3D Printer Truck Amount of investment $40,000 $72,000 Useful life 4 years 9 years Estimated residual value Estimated total income over the useful life $3,200 $27,540 Determine the expected average rate of return for each proposal. If required, round your answers to one decimal place. 3D Printer Truck