and after tax cost of debt Personal Finance Problem in purchasing a bond issued by Sony He has obtained the tollowing information on the security Sony Bond David Abbot is interested Sony He has obtained the following information on the security Par value $1000 Coupon interest rate 5 0% Cost $8s0 Years to maturity 10 Corporate tax rate 35% Answer the following questions a. Cakculate 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 bo nd using the bond's yield to maturity OTM) is % (Rourd to two decimal places ) b. Theafter-tax cost ofthe Sony bond given the corporate tax tate is[]% (Round to two decimal places )