Adams food service has issued 7 3/8% bonds that mature on July 15th, 2042. The bonds are callable $1,037.08 on July 15th, 2017. Assume that interest is paid and compounded annually. Determine the yield to maturity (to the nearest 10th of 1%) if an investor purchased a $1,000 denomination bond for $900 on July 15 2010.