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 $40,000 $50,000 Useful life 7 years 10 years Estimated residual value $3,000 $6,000 Estimated total income over the useful life $24,080 $36,400 Determine the expected average rate of return for each proposal. If required, round to the nearest whole percent. 3D Printer fill in the blank 1 % Truck fill in the blank 2 %