please solve part b

Omega Corporation has 10.1 million shares outstanding, now trading at $56 per share. The firm has estimated the expected rate of return to shareholders at about 13%. It has also issued long-term bonds at an interest rate of 8% and has a debt value of $205 million. It pays tax at a marginal rate of 21%. a. What is Omega's after-tax WACC? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Answer is complete and correct. After-tax WACC 11.22 b. What would WACC be if Omega used no debt at all? (Hint: For this problem, you can assume that the firm's overall beta (Bal is not affected by its capital structure or by the taxes saved because debt interest is tax-deductible.) (Do not round Intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Answer is complete but not entirely correct. WACC 11.89 %