On January 1, 2017, Babb Trailers, Inc. issued $6,500,000 of par value bonds for $6,200,000. The bonds pay interest semiannually on January 1 and July 1. The contract rate of interest is 3% while the market rate of interest for similar bonds is 5%. The bond premium or discount is being amortized at a rate of $10,000 every six months. The life of these bonds is: 15 years 30 years 26.5 years 32 years 35 years