finance homework help

Weighted average cost of capital -- The target capital structure for QM industries is 39%  stock, 14% preferred stock, and 47%, debt. If the cost of common equity for the firm is 18.1%, the cost of preferred stocks 10.9%, the before tax cost of debt is 8.8%, and the firms tax rate is 35%, what is the QM's weighted average cost of capital?

QM's WACC is ____%