Ratio of boys and girls in college
CMAT 2021 · Quantitative Techniques & Data Interpretation · Easy · Ratio and Proportion
In June-2020, the ratio of boys to girls in a college was 3 : 2. In September-2020, there were 80 fewer boys and 20 fewer girls in the college and the ratio of boys to girls was 7 : 5. What was the total number of students in the college in June-2020?
- A.
1000
- B.
1100
- C.
1200
- D.
1300
Answer
D
Explanation
Let the number of boys and girls in June-2020 be and respectively.
In September-2020:
- Number of boys =
- Number of girls =
Given ratio:
Total students in June-2020 = .
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