Question

If 2/5 of the total number of students in a school are boys, what fraction of the total no. of students are girls ? if there are 165 girls in the school, find the no. of boys ?

Answer 1

1-2/5= 3/5th fraction are girls...so let total students=x
so 3x/5=165
so 3x=165*5
3x=825
x=275
total students=275