31-01-2017
Mathematics

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The ratio of boys to girls at a party is 3:5
2 boys leave the party
The ratio of boys to girls is now 5:9
Work out the number of girls at the party. Show Full Working.

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Аноним Аноним

31-01-2017

(3/8)(x+y)=x
(5/14)(x+y-2)=x

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