Flag limited has been maintaining a capital structure of $25$:$15$ : $60$ for debt, preference and

equity capital which it believes is optimal. The $10\%$ debt of Flag limited is selling at $20\%$

discount to the face value and the $12\%$ preference share is selling at par. Flag limited

growing at $15\%$ p$.$a had paid the dividend of TZS $4$ per share in the previous year, and

its share of face value of TZS $10$ is trading at TZS $60.$ Flag limited has a reserve of TZS

per share. The corporate tax payable by the firm is $40\%.$

What is the WACC for Flag limited based on Book value and market value weights?