Company $A$ is financed by $10\%$ of debt and the rest of the company is financed by common equity. The company's before$-$tax cost of debt is $5\mathrm{.}1\%,$ and its cost of equity is $12\mathrm{.}2\%.$ If the marginal tax rate is $30\%,$ the company's weighted average cost of capital $($WACC$)$ is $q,($Note: Write your answer as a decimal with three decimal places. For example, if your answer is $8\mathrm{.}7\%,$ you should write $0\mathrm{.}087$ in the answer box. DO NOT write $8\mathrm{.}7$ in the box as you will be marked wrong$).$