I’m having trouble solving this problem How do I solve?A firm uses only debt and equity in

Question

I’m having trouble solving this problem. How do I solve?

A firm uses only debt and equity in

its capital structure. The firm’s weight of equity is 30 percent. The firm’s cost of equity is 14 percent and it has a tax rate of 25 percent. If the firm’s WACC is 11 percent, what is the firm’s before-tax cost of debt?

Financial Accounting