The ratio of boys and girls in a school is 4:5. When 2 more boys join, their ratio becomes 6:7. How many girls in the school ?

The ratio of boys and girls in a school is 4:5. When 2 more boys join,

1.	The ratio of boys and girls in a school is 4:5. When 2 more boys join, their ratio becomes 6:7. How many girls in the school ?
A.	29
B.	31
C.	35
D.	42
Answer» D. 42

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The ratio of boys and girls in a school is 4:5. When 2 more boys join, their ratio becomes 6:7. How many girls in the school ?

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