Calculate the weighted average cost of capital for a firm assuming weights of 30%, 10%, and 60% respectively for debt, preferred stock, and equity. The marginal tax rate is 30%. The stock dividend is $5.00 per share, the growth rate is expected to be 5%, and the market price of the stock is $100 per share. The preferred dividend is $6.00 per share, and its market price is $100.00 per share. The bond matures in three years, its coupon rate is 8% per annum, and its yield to maturity is 9%