RISK Group Inc. currently has no debt outstanding but can borrow at an interest rate of $6\mathrm{.}0\%.$ The company's WACC $($unlevered$/$no debt$)$ is $12\mathrm{.}0\%$ and it has a tax rate of $25\%.$ If the company adjusts its capital structure to $25\%$ debt and $75\%$ equity, what will be its cost of equity?