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A percent is that number out of 100. Thus 30% can be rewritten as 30/100. The next step is to note that "of" in mathematics means "multiplied by." For example, 7 groups of 5 means 7x5. Thus the question can be expressed as 30/100 x 272. This calculates out as 81.6. Therefore 30% of 272 is 81.6

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13y ago

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