Ying 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

$16\mathrm{.}9\%106\mathrm{.}865$ years $ $49,000,000$

$28\mathrm{.}4115\mathrm{.}428$ years $44,000,000$

$38\mathrm{.}1113\mathrm{.}9715\mathrm{.}5$ years $64,000,000$

$47\mathrm{.}7103\mathrm{.}2125$ years $71,000,000$

If the corporate tax rate is $24$ 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$.,32\mathrm{.}16.)$