Cote Import has several bond issues outstanding, each making semiannual interest payments. The bonds are listed in the following table.

Bond Coupon Rate Price Quote Maturity Face Value

$17\mathrm{.}00\%103\mathrm{.}305$ years $ $45,000,000$

$28\mathrm{.}50110\mathrm{.}628$ years $40,000,000$

$38\mathrm{.}20109\mathrm{.}9715\mathrm{.}5$ years $50,000,000$

$47\mathrm{.}80102\mathrm{.}8725$ years $65,000,000$

If the corporate tax rate is $34\%,$ what is the after$-$tax cost of the company$$s debt? $($Do not round intermediate calculations. Round the final answer to $2$ decimal places.$)$

Cost of debt $\%$