Blue Bull. Inc., has a target debt-equity ratio of.83. Its WACC is 8.7 percent, and the tax rate is 38 percent. Required: If the company's cost of equity is 12.3 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).) If the after tax cost of debt is 5.4 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).)