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 8.90% 105.9 3 Years $29,000,000

2 6.40 94.5 6 Years 49,000,000

3 8.60 104.7 13.5 Years 54,000,000

4 9.10 94.5 23 Years 69,000,000

If the corporate tax rate is 35 percent, what is the after tax cost of the company's debt?

A. After tax cost of debt ________ % (Answer as a percent rounded to 2 decimal places eg. 32.16)