Average Rate of Return The following data are accumulated by Lone Peak Inc. in evaluating two competing capital investment proposals: Amount of investment Useful life Estimated residual value Estimated total income over the useful life 3D Printer Truck $64,000 4 years $84,000 7 years 0 0 $8,960 $30,870 Determine the expected average rate of return for each proposal. If required, round your answers to one decimal place. 3D Printer Truck Feedback X % % Check My Work Divide the estimated average annual income by the average investment. Investment cost plus estimated residual value, divided by two, equals average investment. Learning Objective 2.