If Rohan requires a capital structure of 10% debt, 17% preference shares and the balance ordinary shares. What is Rohans weighted average cost of capital (WACC), given a 30% tax rate and return on preference shares 10.3%, equity 21.1% and debt 6.5%? Record your answer in decimals and to four decimal places 0.0000, e.g., your answer should be 0.034 not 3.40%