P9-3 (similar to) Question Help Before-tax cost of debt and after-tax cost of debt Personal Finance Problem following information on the security: David Abbot is interested in purchasing a bond issued by Sony. He has obtained the Sony Bond Par value $1000 Cost $900 Coupon interest rate 8.0% Years to maturity 10 Corporate tax rate 20% Answer the following question:s 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 TM)s % (Round to two decimal places