Average Rate of Return-Cost Savings one employee who has an average wage of $34,775 per year. In addition, the equipment will have operating and energy costs of $6,630 per year. Determine the average rate of return on the equipment, giving effect to straight-line depreciation on the investment. If required, round to the nearest whole percent. % Average Rate of Return-New Product has a cost of $654,700, residual value of $49,300, and an eight-year life. The equipment can only be used to manufacture the phone. The cost to manufacture the phone follows: Determine the average rate of return on the equipment. If required, round to the nearest whole percent. %