Olympic Sports has two issues of debt outstanding. One is an 8% coupon bond with a face value of $31 million, a maturity of 10 years, and a yield to maturity of 9%. The coupons are paid annually. The other bond issue has a maturity of 15 years, with coupons also paid annually, and a coupon rate of 9%. The face value of the issue is $36 million, and the issue sells for 93% of par value. The firm's tax rate is 35%. what is the after tax cost?

I know that the before tax cost is 9.49 but not sure how to find after.