step by step solution in Excel/spreadsheet is required

Joylin, Incorporated, has equity with a market value of $23.1 million and debt with a market value of $9.24 million. Treasury bills that mature in one year yield 6 percent per year and the expected return on the market portfolio is 11 percent. The beta of the company's equity is 1.16 . The company pays no taxes. a. What is the company's debt-equity ratio? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) b. What is the company's weighted average cost of capital? (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 cost of capital for an otherwise identical all-equity company? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)