Calculate the aftertax cost of debt under each of the following conditions. (Do not round intermediate calculations. Input your answers as a percent rounded to 2 decimal places.)

a. Yield- 14.0% / Corporation Tax Rate- 28% / Aftertax Cost of Debt- ?%

b. Yield- 5.6% / Corporation Tax Rate- 35% / Aftertax Cost of Debt- ?%

c. Yield- 12.4% / Corporation Tax Rate- 25% / Aftertax Cost of Debt- ?%