Wednesday, November 19, 2014

Work out 18 as a percentage of 24.

Hello!


One percent of something is, by definition, a one-hundredth of this "something".


In this problem, the whole "something" is `24,` and one percent of `24` is `24/100,` or `0.24.`


How much percents of `24` are inside `18`? To answer this question, we divide `18` by one such percent: `18/((24/100)).`


Compute it: `18/((24/100)) = (18*100)/24`  (100 goes to the numerator).` `


Reduce by 6, `(18*100)/24=(3*100)/4,`


then reduce by 4: `(3*100)/4=3*25=75.`



This is the answer: 18 is 75% of 24.

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