Targaryen corporation has a target capital structure of 70 percent common stock, 5 percent preferred stock, and 25 percent debt. its cost of equity is 10 percent, the cost of preferred stock is 5 percent, and the pretax cost of debt is 6 percent. the relevant tax rate is 23 percent.

a.
what is the company's wacc? (do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e. g., 32.16.)

b. what is the aftertax cost of debt? (do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e. g., 32.16.)