Question

in a class of 49 students number ofgirls is 2/5of the boys find the number of boys in the class

Answer 1

Let the no.of boys be X
So the no. Of girls will be 2/5 x
As per the question,
x +2/5x =49
5x +2X=49*5
7x =245
x =35

So the no. Of boys is 35 and the no. Of girls is 14

Answer 2

let no. of boys be x .
->2x/5 +x=49
solving eq. gives x=35, which is no. of boys