The capital structure of Ntatia Ltd is made up of GHC 20,000 equity and 30,000 debt. The debt capital was obtained by issuing a 5 year 10% coupon bond with a face value of GHC 1,000. The bond is currently quoted at GHC 818.18. The rate on government Treasury bill is 10% and the market offers an average return of 20%. What is the firms weighted average cost of capital if its beta is 1.5?

Please show step by step solution. Do not use excel to solve.