Song earns $$125,000$ taxable income as an interior designer and is taxed at an average rate of $25$ percent $($i$.$e$.,$ $$31,250$ of tax$).$

Required:

a$.$ If Congress increases the income tax rate such that Song's average tax rate increases from $25$ percent to $35$ percent, how much more income tax will she pay assuming that the income effect is descriptive?

Note: Round your intermediate calculations and final answer to $2$ decimal places.

b$.$ If the income effect is descriptive, the tax base and the tax collected will increase.

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Required B

If Congress increases the income tax rate such that Song's average tax rate increases from $25$ percent to $35$ percent, how much more income tax will she pay assuming that the income effect is descriptive?

Note: Round your intermediate calculations and final answer to $2$ decimal places.

Additional income tax