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there are 7 boys at a youth club the ratio of boys to girls is 1:2 to how many children are at the youth club in total 

 Mar 4, 2021
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boys to girls is 1:2

and there are 7 boys

so there are 7 x 2 = 14 girls. 
This means the tottal number of children there is 7 + 14 = 21 children.

 Mar 4, 2021

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