WBCS.LIVE practice question

There are 40 members in a sports club of a school. The ratio of the number of boys to girls is 3 : 1. The number of girls to be added to the club to make the ratio of boys to girls 3 : 2 is

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 12
  2. 10
  3. 15
  4. 20

Correct answer and explanation

Correct answer: 10

Explanation: āœ… Correct Answer: B. 10 šŸ“š Explanation: Initially, there are 30 boys and 10 girls (3:1 ratio in 40 members). To make the ratio 3:2, the number of boys stays at 30, so the new number of girls must be 20. Since there are already 10 girls, we must add exactly 10 more to reach the new total of 20. This is a simple proportional calculation used in club membership problems.