Before-tax cost of debt and after-tax cost of debt Personal Finance Problem the following information on the security: David Abbot is interested in purchasing a bond issued by Sony. He has obtained Sony Bond C oupon interest rate 6.0% Years to maturity 10 Par value $1000 Cost $900 Corporate tax rate 20% Answer the following questions: a. Calculate the before-tax cost of the Sony bond using the bond's yield to maturity (YTM). b. Calculate the after-tax cost of the Sony bond given the corporate tax rate. a. The before-tax cost of the Sony bond using the bond's yield to maturity (YTM) is %. (Round to two decimal places.) b. The after-tax cost of the Sony bond given the corporate tax rate is %. (Round to two decimal places.)