A firm with an income tax rate of 21 percent has three components in its capital structure, as shown below. What is the firm's WACC? (Round your answer to the nearest one-hundredth of a percent. Do not enter the percentage symbol.

Component Market Value Pre-Tax Cost $10,000,000 7.5% 10-year debenture bonds $55,000,000 4.5% 15-year mortgage bonds 15.5% Common equity $80,000,000