Jesse's company has 10 000 shares of ordinary shares outstanding at a market price of R55 a share. The firm also has a bond issue outstanding with a total face value of R250000 which is selling for 105 per cent of face value. The cost of equity is 11 per cent while the pre-tax cost of debt is 8 per cent. The firm has a beta of 1,1 and a tax rate of 34 per cent. What is Jesse's weighted average cost of capital?