How can i calculate the following question? Please help me

QUESTIQES Assume the following information for a company: - (a) There are 25 million ordinary shares. The last dividend paid was $0.60 per share and this is expected to grow at 5% per annum indenitely. The shares have a required return of 15% pa. (b) An overdraft of $ 15 million attracts an interest rate of 9% per annum. (c) Bonds exist with a total face value of $30m, a coupon of 8% pa paid semi-annually and 5 years to maturity. Their current market yield is 10% pa compounded semiannually. (d) The corporate tax rate is 36%. Calculate the Weighted Average Cost of Capital on an after tax basis. (10 Marks)