Assume that you purchased an 8%,25-year, $1,000 par, semiannual payment bond priced at $1,016.50 when it has 15 years remaining until maturity. Compute: a. Its promised yicld to maturity? Do not round intermediate calculations. Round your answer to two decimal places. % annually b. Its yield to call if the bond is callable in five years with a 9% premium? Do not round intermediate calculations. Round your answer to two decimal places. % annually