Can someone help with these questions please?

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1) Lamda plc. Has the following financial information regarding financing and its costs. The company is in the 25% corporate tax bracket. They also have a target debt to equity ratio of 2/3. Tasks: a) What is the company's weighted average cost of capital? (8 marks) b) What are the company's weights for debt and equity using the company's target capital structure (debt/equity ratio)? (8 marks) c) Assuming that the company only has the long term debt in this instance, then using the target weighting for D/E from part (b), what is the WACC