Scot and Vidia, married taxpayers, earn $$241,400$ in taxable income and $$5,000$ in interest from an investment in City of Tampa bonds. $($Use the U$.$S$.$ tax rate schedule for married filing jointly.$)$

Required:

If Scot and Vidia earn an additional $$81,400$ of taxable income, what is their marginal tax rate on this income?

What is their marginal tax rate if$,$ instead, they report an additional $$81,400$ in deductions