Banks sometimes quote interest rates in the form of add-on interest. In this case, if a 1-year loan is quoted with an interest rate of 17.5% and you borrow $1,000, then you pay back $1,175. But you make these payments in monthly installments of $91 each.

a. What is the true APR on this loan? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places. Use a financial calculator or Excel.)

b. What is the effective annual rate on the loan? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.)