In mid-2017, the market values of DuPont's common stock, preferred stock, and debt were $53,240 million, $221 million, and $14,080 million, respectively. The company has a beta of 1.09 and the market risk premium is 5.6%. The risk free rate is 4%. The yield to maturity of the company's bond is 6.25% and the tax rate is 35%. The company's preferred stock was priced at $46 and dividend paid on the preferred stock is $2.8/share. What is the DuPont's WACC? 3