Pfd Company has debt with a yield to maturity of 6.6%, a cost of equity of 14.2%, and a cost of preferred stock of 9,9%. The market values of its debt, preferred stock, and equity are $13.1 million $2.5 million, and $16.5 million, respectively, and its tax rate is 25%. What is this firm's after-tax WACC? Note: Assume that the firm will always be able to utilize its full interest tax shield Pid's WACC is%. (Round to two decimal places.)