A semiannual payment bond with a $1,000 par has a 7% quoted coupon rate, a 7% promised yield to maturity (ytm) and 10 years to maturity. What is the bond's duration? 10.00 years 9.52 years 6.45 years 5.20 years 7.35 years A semiannual payment bond with a $1,000 par has a 7% quoted coupon rate, a 7% promised yield to maturity (ytm) and 10 years to maturity. What is the bond's duration? 10.00 years 9.52 years 6.45 years 5.20 years 7.35 years