A company sold a $1,000,000 issue of bonds with a 15-year life, paying 4% interest per year.

Question:

A company sold a $1,000,000 issue of bonds with a 15-year life, paying 4% interest per year. The bonds were sold at par value. If the company paid a selling fee of $50,000 and has an annual expense of $70,256 for mailing and record keeping, what is the true rate of interest that the company is paying for the borrowed money?