Williams, Inc., has compiled the following information on its financing costs: Type of Book Value Market Value Cost Financing Short-term debt $ 12,000,000 $ 12,500,000 4.1% Long-term debt 20,000,000 23,000,000 7.2 Common stock 9,000,000 54,000,000 13.8 Total $ 41,000,000 $89,500,000 The company is in the 21 percent tax bracket and has a target debt-equity ratio of 60 percent. The target short-term debt/long-term debt ratio is 20 percent. a. What is the company's weighted average cost of capital using book value weights? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) b. What is the company's weighted average cost of capital using market value weights? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) c. What is the company's weighted average cost of capital using target capital structure weights? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) de a. Weighted average cost of capital b. Weighted average cost of capital c. Weighted average cost of capital % % %