The ratio of boys and girls in a college was 4 : 5. New students admitted and the number of boys went up by 50% and the number of girls went up by 60%. What is the new ratio of boys and girls in the college?
The ratio of boys and girls in a college was 4 : 5. New students admitted and the number of boys went up by 50% and the number of girls went up by 60%. What is the new ratio of boys and girls in the college? Correct Answer 3 : 4
Given:
The ratio of boys and girls in a college was 4 : 5. New students admitted and the number of boys went up by 50% and the number of girls went up by 60%
Calculation:
Let the number of boys and girls initially be 4x and 5x.
Hence, after new students admitted, number of boys = 4x × 150% = 6x
And, number of girls = 5x × 160% = 8x
New ratio of boys and girls = 6x : 8x = 3 : 4
∴ the correct answer is 3 : 4.
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Feb 20, 2025