Ratio & Proportion · Question 30 · Hard
Ratio & Proportion question 30
The ratio of boys to girls in a coaching class is 5 : 3. If 8 boys leave and 8 girls join, the numbers of boys and girls become equal. How many students were in the class originally?
- 48
- 80
- 56
- 64
Answer and explanation
Answer: D. 64
Explanation: Let boys = 5k and girls = 3k. 5k − 8 = 3k + 8 gives k = 8. Original total = 8k = 64.
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