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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What is 30% off 69 dollars
81.6 : 30% = 30/100, so (30/100)*272 = 81.6
what is 27.00-30%
30% off of 400 dollars = 70% of 400 dollars = 400*70/100 = 280 dollars
30% off 372 dollars = 70% of 372 dollars = 372*70/100 = 260.40 dollars