The average tax on a professor's income of $100,000 is 18 percent, and the marginal tax rate above $100,000 is 45 percent. If the professor teaches during the summer and earns an additional $10,000 (bringing her total earnings for the year to $110,000), how much of the summer income does she keep after paying taxes?

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The Answer of The average tax on a professor's income of $100,000 is 18 percent, and the marginal tax rate above $100,000 is 45 percent. If the professor teaches during the summer and earns an additional $10,000 (bringing her total earnings for the year to $110,000), how much of the summer income does she keep after paying taxes?

The Average Tax on a Professor's Income of $100,000 Is