Adjusted WACC. Lewis runs an outdoor adventure company and wants to know what effect a tax change will have on his company's WACC. Currently, Lewis has the following financing pattern: Equity: 31% and cost of 18.84% Preferred stock: 12% and cost of 14.61% Debt: 57% and cost of 11.4% before taxes What is the adjusted WACC for Lewis if the tax rate is a. 40%? b. 25%? c. 15%? d. 10%? e. 0%? . a. What is the adjusted WACC for Lewis if the tax rate is 40%? % (Round to two decimal places.)