Ying Import has several bond issues outstanding, each making semiannual interest payments. The bonds are listed in the following table. Bond Price Quote Face Value 1 2 3 4 Coupon Rate 6.7% 8.2 7.9 7.5 106.56 115.22 113.77 103.01 Maturity 5 years 8 years 15.5 years 25 years $ 47,000,000 42,000,000 62.000.000 57.000.000 If the corporate tax rate is 35 percent, what is the aftertax cost of the company's debt? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Cost of debt %