The treasurer of Brandon Blue Sox is seeking a $28,000 loan for 180 days from the Brandon Credit Union. The stated interest rate is 10 percent and there is a 15 percent compensating balance requirement. The treasurer always keeps a minimum of $2,300 in the firms chequing account. These funds could count toward meeting any compensating balance requirements.

What is the annual rate of interest on this loan? (Hint: If the interest rate is 10 percent per year and you're borrowing the money for less than a year, then the interest cost is a portion of 10 percent times $28,000.) (Use 365 days in a year. Do not round intermediate calculations. Round the final answer to 2 decimal places.)