Given:
Total number of students = 1400
The ratio of boys to girls is 3 to 4 for the school.
To find:
The number of boys and girls.
Solution:
We have, Boy : Girls = 3:4.
Let number of boys be 3x and number of girls be 4x.
Total number of students = 1400


Divide both sides by 7.

Now,
Number of boys

Number of girls

Therefore, the number of boys is 600 and number of girls is 800 in the Berkmar Middle school.