Assume that you purchased an 8 percent, 20-year, $1,000 par, semiannual payment bond priced at $1,012.50 when it has 12 years remaining until maturity. Compute: a. Its promised yield to maturity b....

Assume that you purchased an 8 percent, 20-year, $1,000 par, semiannual payment bond priced at $1,012.50 when it has 12 years remaining until maturity. Compute:

a. Its promised yield to maturity

b. Its yield to call if the bond is callable in three years with an 8 percent premium