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Maths
Ratio and Proportion
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SSC CGL 2025 Second Shift 📅 12 Sep, 2025

The ratio of boys to girls in a school is 7:5. If 20 more girls join the school, the new ratio of boys to girls becomes 7:6. What is the total number of students in the school initially?

A
200
B
240
C
300
D
360
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SSC CGL
2025 • 12 Sep, 2025 • Second Shift
The ratio of boys to girls in a school is 7:5. If 20 more girls join the school, the new ratio of boys to girls becomes 7:6. What is the total number of students in the school initially?
Correct Answer
240
7x / (5x + 20) = 7/6 => 42x = 35x + 140 => x = 20. Total initial students = 12x = 240.[span_60](start_span)[span_60](end_span)...
Ref/Book : 1771252791.pdf
Ref. Subject Maths
Chapter -
Ref. Topic Ratio and Proportion
Pg. No -
💡 Analysis & Explanation
Introduction ▼
7x / (5x + 20) = 7/6 => 42x = 35x + 140 => x = 20. Total initial students = 12x = 240.[span_60](start_span)[span_60](end_span)
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