Drogo, Inc., is trying to determine its cost of debt. The firm has a debt issue outstanding with 16 years to maturity that is quoted at 105 percent of face value. The issue makes semiannual payments and has an embedded cost of 10 percent annually. What is the company's pretax cost of debt? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) If the tax rate is 35 percent, what is the aftertax cost of debt? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)