Ying Import has several bond issues outstanding, each making semiannual interest payments. The bonds are listed in the table below. Price Quote Bond 1 2 3 4 Coupon Rate 8.50% 6.70 8.20 8.70 105.5 94.9 104.3 106.2 Maturity 5 years Face Value $ 25,000,000 8 years 45,000,000 15.5 years 25 years 50,000,000 65,000,000 If the corporate tax rate is 25 percent, what is the aftertax cost of the company's debt? Note: 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 %