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 8.70% 106.7 2 6.90 93.7 3 8.40 105.5 4 8.90 95.3 Maturity 7 years 10 years 17.5 years 27 years Face Value $26,000,000 32,000,000 37,000,000 52,000,000 If the corporate tax rate is 22 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.) Answer is complete but not entirely correct. Aftertax cost of debt 5.13 %