The Black Bird Company plans an expansion. The expansion is to be financed by selling $172 million in new debt and $6 million in new common stock. The before-tax required rate of return on debt is 7.75% percent and the required rate of return on equity is 16.35% percent. If the company is in the 34 percent tax bracket, what is the weighted average cost of capital?

Round the answer to two decimal places in percentage form.