urgent

Aphid Corp. will finance its next major expansion with 20% debt, 30% preferred stock, and 50% retained earnings. Aphid's after-tax cost of debt is 5.1%, cost of preferred atock is 8.6%, and cost of retained earnings is

13.5%. What is the corporation's weighted average cost of capital? Submit your answer as a percentage and round to two decimal places (Ex. 0.00%)