Question

In a class of 42 students, the number of boys is 2/5 of the girls. How do you find the number boys and girls in the class?

Answer 1

total students =42

let girls be x

then boys = 2x/5

sum of x and 2x/5= [5x+2x]/5= 7x/5

7x/5=42

x= 42×5/7

=6×5

x=30

girls=30

boys= 2/5×30=2×6=12