Challenging. Goodwin & Wulff LLC sold a 20-year bond issue 7 years ago. It had a 12% annual coupon rate, paid semiannually, and an 8% call premium (i.e., paid 8% premium to face value if called). Today, the company called the bonds. The bonds were originally sold at their face value of $1,000. Compute the realized rate of return for investors who bought the bonds at issue and had them called away today.

I am getting a slightly different answer than the homework answer key