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14-03-2018
Mathematics

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at the park, 4/7 of the children are boys. if there are 8 boys at the park, how many are girls?

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Аноним Аноним

14-03-2018

There are 4/7 boys, so there are 3/7 girls.

Let the total number of children be x.

4/7x = 8
1/7x = 8 ÷ 4
1/7x = 2
3/7x = 2 x 3
3/7x = 6

There are 6 girls.

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EmeanMachine EmeanMachine

14-03-2018

6 because 4/7 boys means a ratio of 4:3, so twice 4 to make 8 means twice 3 to make 6.

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