The effect of tax rate on WACC K B jewelers wishes to explore the effect on its cost of capital of the rate at which the company pays taxes The firm wishes a capital structure of 30% debt, 20 %, preferred suck and 50% common stock. The cost of financing with retained earnings is 12%, the cost of preferred stack financing is 11%, and the before-tax cost of debt financing is 9% Calculate the weighted average cost of capital (WACC) given a t. rate of 30%. The ftrm's WACC is 0% (Round to two decimal places )