Jaguar Oil Corp. owns a piece of petroleum drilling equipment that costs $100,000, utilizes MACRS depreciation, and has a combined 40% tax rate. Jaguar will lease the equipment to others and each year will receive $30,000 in rent. At the end of 5 years, the firm will sell the equipment for $35,000. What is the after-tax rate of return Jaguar will receive from this equipment investment?