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	8.80%	105.8	4 years	$28,000,000
2	7.00	94.6	7 years	48,000,000
3	8.50	104.6	14.5 years	53,000,000
4	9.00	106.5	24 years	68,000,000

Required:

If the corporate tax rate is 40 percent, what is the aftertax cost of the companys debt? (Do not round intermediate calculations. Enter your answer as a percentage rounded to 2 decimal places (e.g., 32.16).)