You are analyzing the after-tax cost of debt for a firm. You know that the firms 12-year maturity, 15.50 percent semiannual coupon bonds are selling at a price of $1,117.25. These bonds are the only debt outstanding for the firm.

YTM 13.5%

after cost of debt is 8.91%

What is the current YTM of the bonds and after-tax cost of debt for this firm if the bonds are selling at par? (Round intermediate calculations to 4 decimal places, e.g. 1.2514 and final answers to 2 decimal places, e.g. 15.25%.)