There are 400 students in a class. The ratio of the number of boys to the number of girls is 5 : 3. Find the number of boys in the class.
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 250
In the ratio 5 : 3 the class is made of \(5+3=8\) equal parts, and the boys are 5 of these 8 parts.
One part \(\displaystyle =\frac{400}{8}=50\)
Number of boys \(=5\times50=250\)
There are 250 boys in the class.