2. Four $5000,8.5% bonds with interest payable semi-annually, redeemable at par, were bought 20 years before maturity to yield 7.5% compounded semi-annually. The bonds were sold 3 years later at 103.625. 3. A $5000 bond with 8% interest payable semi-annually redeemable at par on June 1 , 2031, was bought on December 1, 2017, to yield 9% compounded semi-annually. The bond was sold on September 22,2021 , at 101.375. 2. Four $5000,8.5% bonds with interest payable semi-annually, redeemable at par, were bought 20 years before maturity to yield 7.5% compounded semi-annually. The bonds were sold 3 years later at 103.625. 3. A $5000 bond with 8% interest payable semi-annually redeemable at par on June 1 , 2031, was bought on December 1, 2017, to yield 9% compounded semi-annually. The bond was sold on September 22,2021 , at 101.375