The Green Paddle has a cost of equity of 17.3 percent and a pre-tax cost of debt of 6.4 percent. The debt-equity ratio is 0.45 and the tax rate is 34 percent. What is Green Paddle's unlevered cost of capital? Express your answer as a percent , with at least two digits to the right of the decimal. Do not include the percent sign, or any punctuation other than the decimal.