Inc. is considering changing its capital structure to $60$debt and $40\%$ equityIncreasing the firm's level of debt will cause its cost of debt to increase to $12\%$Use the Hamada equation to unlever and relever the beta for the new level of debt. What will the firm's weighte average cost of capital $($WACC$)$ be makes this change in its capital structure $?($Hint: Do not round intermediate calculations$)$