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A percent is that number over 100. Thus 20% can be written as 20/100. The next step is to note that "of" in mathematics means "multiplied by." For example, 5 groups of 3 is 5x3. This means the question can be rewritten as 20/100 x 35. This calculates to 7. Therefore, 20% of $35 is $7.

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13y ago

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