Question

in a class of 42 students the number of boys height 2.5 of the girls find the number of boys and girls in the class

Answer 1

Let the number of girls be x

number of boys = 2.5 of girls = 2.5 of x

According to condition of the question

x + 2.5x = 42

3.5x = 42

x= 42/3.5

x = 12

So, the girls = 12

boys = 2.5 x 12 = 30