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Joined: Tue Feb 22, 2011 11:06 pm
Posts: 75
paper 2,bond 4th,Q no:9-10

in a school 6 out of every 11 children are girls.if there are 407 children in the school there are:_ boys and _ girls.

the answer is 185 and 222

can any one explain the work out please?thank you.

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Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11931
So how many groups of 11 children are in a school of 407?

If you can see this then the rest is straightforward ... have a think.

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Joined: Tue Aug 30, 2011 3:34 pm
Posts: 34
This is a ratio problem of 5:6 boys to girls. The proportion is 5/11 boys, 6/11 girls

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Joined: Tue Feb 22, 2011 11:06 pm
Posts: 75

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Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11931
407 has 407/11 groups of children = 37

in each group 6 are girls so number of girls = 6 x 37

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Joined: Tue Feb 22, 2011 11:06 pm
Posts: 75
thankyou guest55 my DS got it now.

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Joined: Thu Aug 20, 2015 9:33 pm
Posts: 1
407 divided by 11 = 37
6 x 37 = 222
5 x 37 = 185

222 girls
185 boys

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