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Percentage means a fraction with a denominator of 100. 15 percent is 15/100. 15% of something means you multiply it by 15/100.

Therefore 15% of 120 is 120*15/100 = 1800/100 = 18. In dollars, 15% of $120 is $18.

Now 15% OFF of $120 means you subtract 15% from the original price. So

$120 - $18 = $102. Final answer.

Or you could say that 15% (of anything) OFF 100% is 85% because 100 - 15 = 85.

$120*85/100 = $10,200/100 = $102. Same answer of course.

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10y ago

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