Question
The number of boys and girls in a college is in the ratio
of 6:5. If 12 boys were absent and 18 girls joined, their numbers would be equal. Determine the original number of girls enrolled in the college.Solution
ATQ,
Let the number of boys and girls be 6n and 5n, respectively.
So, 6n - 12 = 5n + 18
n = 30
Therefore, number of girls = 5 × 30 = 150
More Ratio Questions
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
19.89% of 449.67 + 14.67% of 299.89 - 9.89% of 99.79 = ?
(13.13 ×  32.98) + 20.15% of 649.99 = ? + 122.34
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
(2099.92 ÷ 25.02 of ? × 199.56 + 1199.95) = 3999.86
What approximate value will replace the question mark (?) in the following?
? =...
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
?2 + (39.99 × 10.99 + 7.01) - (39.99 × 2.992 + 21.99) = 21.99 × 23.01
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
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