Question

In a class of 42 students,the number of boys is 2/5 of the girls.find the number of boys and the number of girls in the class​

Answer 1

Answer:

The number of boys are 12 and the number of girls are 30.

Step-by-step explanation:

Let the number of girls be x

According to question the number of boys are x(2/5)=2x/5

Now the total students i.e

Sum of boys and girls is 42

2x/5+x=42

2x+5x/5=42

7x/5=42

7x=42(5)

7x=210

x=210/7

x=30 this is number of girls

Now number of boys=x(2/5)

=30(2/5)

=60/5

=12