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Question
The number of boys in a school is 334 more than the number of girls. If the total strength of the school is 572, find the number of girls in the school.
Solution
Let the number of girls in the school be x.
Then, the number of boys in the school will be (x + 334).
The total strength of the school = 572
∴ x + (x + 334) = 572
or, 2x + 334 = 572
or, 2x + 334 − 334 = 572 − 334 {Subtracting 334 from both the sides]
or, 2x = 238
or, `(2x)/2=238/2` [Dividing both the sides by 2]
or, x = 119
∴ Number of girls in the school = 119
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