If you divide $100.00 by 100 you can find 1%, which is $1.00. Now multiply $1.00 by 15 to find 15%, which is $15.00. Simply deduct $15.00 from $100.00 to find the answer. So, the answer is that 15% off $100.00 is $15.00 and the new price is $85.00
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40% off of 15 dollars = 60 left of 15 dollars = 15*60/100 = 9 dollars.
15 percent of 15 dollars is 2.25 dollars off, leaving 12.75
So, 85 % of 18 dollars = 85 / 100 * 18 = 0.85 * 18 = 15.3 dollars (15 dollars 30 cents)
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.
15 is 15% of 100