Question

The ratio between boys and girls in a class is 3 : 1. Find the number of boys in the class is the total number of students is 40.

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Answer 1

Answer: 30 boys

Explanation:

Boys:Girls

3 : 1

Let no. of girls =x

⇒ no. of boys =3x.

⇒ no. of students in class =4x

= 4/3×3x

= 4 /3 ×no. of boys

40=4/3* no.of boys

40* (3/4)=no.of boys

30=no of boys