Chuck, a single taxpayer. earns $$79\mathrm{.}600$ in taxable income and $$15\mathrm{.}600$ in interest from an Investment in City of Hefilin bonds. $($Use the

U$.$S$.$ tax rate schedule.$)$

Required:

a$.$ If Chuck earns an additional $$40,000$ of taxable income, what is his marginal tax rate on this income?

b$.$ What is his marginal rate if$,$ instead, he had $$40,000$ of additional deductions?

Note: For all requirements, do not round intermediate calculations. Round percentage answers to $2$ decimal places.

Individuals

Schedule X$-$Single