Suppose the HHY Corp has a WACC of 15%, a cost of debt capital of 5%, and a market value debt-to-equity ratio of 0.30. Assuming that HHY Corp. is not subject to taxation and its debt will remain risk-free, what will be HHYs cost of equity capital if it raises its market value debt-to-equity ratio to 0.50? Enter your answer as a percent without the % sign. Round to two decimals.