Answer:
8.23%
Explanation:
WACC is the average cost of capital of the firm based on the weightage of the debt and weightage of the equity multiplied to their respective costs.
According to WACC formula
WACC = ( Cost of common stock x Weightage of common stock ) + ( Cost of preferred stock x Weightage of preferred stock ) + ( Cost of debt ( 1- t) x Weightage of debt )
As cost of debt is already given in after tax rate, so there is no need to used tax factor in the formula. Placing value in the formula,
WACC = ( 11.5% x 45% ) + ( 7% x 15% ) + ( 5% x 40% )
WACC = 5.175% + 1.05% + 2% = 8.225% = 8.23% (rounded off)