killer burgers capital structure consist of 30% debt 20% preferred stock and 50% common stock if killer raises new capital it's after tax cost of debt will be two. 5% it's cost of preferred stock will be 8% it's cost retained earnings will be 11. 6% and it's cost of new common equity will be 12. 6% killer must raise $220,000 if management expects the firm to generate $105,000 and retain earnings this year what is killers marginal cost of capital to raise the needed bonds round your answer to two decimal places