Question

70% of students are boys and the number of girls is 504 find the number of boys

Answer 1

let the no. of total students be x

boys- 70%

a/q

x-70/100×x=504
30x/100=504
x=504×100/30
x=1680

Total students are 1680 in nos.

Boys are -70/100×1680
=1176

Boys are 1176 in nos.