The ratio of the number of boys to that of girls in a school is 11 : 15. If there are 200 more girls than boys in the school, what is the number of boys in that school?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 550.
Given:
The ratio of the number of boys to the number of girls in a school is 11 : 15.
There are 200 more girls than boys in the school.
Calculations:
Let the number of boys and girls in a school be 11x and 15x.
According to the question;
⇒ 15x - 11x = 200
⇒ 4x = 200
⇒ x = 50
Hence, the number of boys in that school = 11x = 11 × 50 = 550