Castor owns one bond A and one bond B. The total value of these two bonds is 2,146.5 dollars. Bond A pays semi-annual coupons, matures in 12 years, has a face value of 1,000 dollars, and pays its next coupon in 6 months. Bond B pays annual coupons, matures in 11 years, has a face value of 1,000 dollars, has a yield-to-maturity of 11.56 percent, and pays its next coupon in one year. Both bonds have a coupon rate of 10.04 percent. What is the yield-to-maturity for bond A?