mickie321 mickie321

20-03-2015
Mathematics

Answered

in our school there are 680 children. if 60% are girls,how many boys are there?

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Аноним Аноним

20-03-2015

[tex] \frac{60}{100} * \frac{x}{680} = 680 * 60 = 40800.[/tex] [tex] \frac{40800}{100} = 408.[/tex]

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pencilandpaper21 pencilandpaper21

20-03-2015

First, you find 10% of 680 which is 68. Then, you multiply this by 6, which equals 408.It is the number of girls in the school. 408 is also the number that you must take away from 680, which is the total of pupils at the school. 680 take away 408 equals 272.
The answer to your question is 272. Thank you for posting this question. I hope my explanation was helpful for you.

PencilandPaper21

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