Pid Company has debt with a yield to maturity of 6.8%, a cost of equity of 14.9%, and a cost of preferred stock of 9.3%. The market values of its debt, preferred stock, and equity are $12.2 million, $2.8 million, and $15.2 million respectively, and its tax rate is 35%. What is this firm's after-tax WACC? Note: Assume that the firm will always be able to utilize its full interest tax shield. Pairs WACC % (Round to two decimal places.)