Required:

Corporation AB$$s marginal tax rate is $10$ percent, and Corporation YZ$$s marginal tax rate is $21$ percent.

a: If both corporations are entitled to an additional $$6,600$ deduction, how much tax savings will the deduction generate for each corporation?

b: If both corporations are entitled to a $$6,600$ tax credit, how much tax savings will the credit generate for each corporation? $($Assume that each corporation$$s precredit tax exceeds $$6,600.)$