Barron Chemical uses a thermoplastic polymer to enhance the appearance of certain RV panels. The initial cost of one process was $120.000 with annual costs of $50,000, Revenues are $85,000 in year 1. Increasing by $1000 per year. A salvage value of $24,000 was realized when the process was discontinued after 8 years. What rate of return did the company make on the process? The rate of retum made by the company is