Before-tax cost of debt and after-tax cost of debt Personal Finance Problem David Abbot is interested in purchasing a bond issued by Sony. He has obtained the following information on the security: Answer the following questions: Calculate the before-tax cost of the Sony bond using the bond's yield to maturity (YTM). Calculate the after-tax cost of the Sony bond given the corporate tax rate. The before-tax cost of the Sony bond using the bond's yield to maturity (YTM) is %. (Round to two decimal places.)