In a certain school, the ratio of boys t...

In a certain school, the ratio of boys to girls is `7:5`. If there are 2400 students in the school, then how many girls are there ?

500

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1000

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The correct Answer is:

Let the number of boys and girls are `7x and 5x`, respectively.
According to question,
`rArr 7x+5x=2400 rArr 12x=2400`
`therefore x=200`
`therefore`Number of girls `=5x`
`=5xx 200=1000`

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