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2007 AMC 10A Problem 7

Problem 7 of 25EasierAlgebra

Last year Mr. John Q. Public received an inheritance. He paid 20%20\% in federal taxes on the inheritance, and paid 10%10\% of what he had left in state taxes. He paid a total of $10,500\$10{,}500 for both taxes. How many dollars was the inheritance?

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Solution

After federal taxes, Mr. Public keeps 80%80\% of his inheritance. State taxes take 10%10\% of that, which is 8%8\% of the inheritance. The total tax is 20%+8%=28%20\% + 8\% = 28\% of the inheritance, so the inheritance is 10,5000.28=37,500. \dfrac{10{,}500}{0.28} = 37{,}500. Thus, the correct answer is D.

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Concepts: percentage · linear equation

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