Question

In a class 25% of the students are boys. The number of boys is 20. Find the number of students.

Answer 1

if 25=20
then,
25×4 gives 100.
so,
25×20+20+20+20=80.
100%= 80.
the total students r 80.
I guess this helps u.

Answer 2

let number of students be X ,boys are 25%x=20 so X =80