Blue Bull, Inc., has a target debt-equity ratio of .82. Its WACC is 8.6 percent, and the tax rate is 30 percent. Required: (a) If the company?s cost of equity is 12.2 percent, what is its pretax cost of debt?(Do not round intermediate calculations. Enter your answer as a percentage rounded to 2 decimal places (e.g., 32.16).) (b) If the after tax cost of debt is 5.3 percent, what is the cost of equity? (Do not round intermediate calculations. Enter your answer as a percentage rounded to 2 decimal places (e.g., 32.16).)