Consider a 15-year, eight percent coupon bond purchased at a yield-to- maturity of six percent. The day after the bond is purchased, interest rates rise to ten percent. At approximately what time horizon is the owner of this bond doing as well as expected when she purchased the bond? (As a tip, round any intermediate calculations to two decimals.) 7 years 9 years 11 years 13 years Consider a 15-year, eight percent coupon bond purchased at a yield-to- maturity of six percent. The day after the bond is purchased, interest rates rise to ten percent. At approximately what time horizon is the owner of this bond doing as well as expected when she purchased the bond? (As a tip, round any intermediate calculations to two decimals.) 7 years 9 years 11 years 13 years