Ying Import has several bond issues outstanding, each making semiannual interest payments. The bonds are listed in the table below. TTE Face Value $28,000,000 31,000,000 36,000,000 55,000,000 Bond Coupon Rate Price Quote 8.90% Maturity 4 years 6 years 14.5 years 25 years 106.8 1 2 6.80 8.60 9.20 93.4 3 105.8 4 96.5 If the corporate tax rate is 25 percent, what is the aftertax cost of the company's 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 %