GATE 2021 MA – Question 1
General Aptitude · Quantitative Aptitude: Data Interpretation, Arithmetic and Number Computation · 1 mark · Multiple choice
The ratio of boys to girls in a class is 7:3. Which is an acceptable total number of students?
- 21
- 37
- 50
- 73
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Show answer and explanation
Correct answer: (C) 50
Explanation
The numbers must be 7k and 3k for integer k, so the total must be divisible by 10. Only **50, C**, qualifies (35 boys,15 girls).
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