Kose, Inc., has a target debt-equity ratio of 0.8. Its WACC is 11 percent, and the tax rate is 31 percent. Kose’s cost of equity is 15 percent, what

Kose, Inc., has a target debt-equity ratio of 0.8. Its WACC is 11 percent, and the tax rate is 31 percent. Kose’s cost of equity is 15 percent, what is its pretax cost of debt? If the after-tax cost of debt is 6.5 percent, what is the cost of equity?