Ying Import has several bond issues outstanding, each making semiannual interest payments. The bonds are listed in the table below. Bond Coupon Rate Price Quote Maturity Face Value 1 8.50 % 105.5 5 years $ 25,000,000 2 6.70 94.9 8 years 45,000,000 3 8.20 104.3 15.5 years 50,000,000 4 8.70 106.2 25 years 65,000,000 If the corporate tax rate is 34 percent, what is the aftertax cost of the companys debt? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Aftertax cost of debt %