In a class, the number of boys and the number of girls are in the ratio of 4 : 5. If 10 more boys join, the ratio of the number of boys to the number of girls becomes 6 : 5 . How many girls are there

 In a class, the number of boys and the number of girls are in the ratio of 4 : 5. If 10 more boys join, the ratio of the number of boys to the number of girls becomes 6 : 5 . How many girls are there

A). 24

B). 25

C). 26

D). 27

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