Question

4 alunos representam 20% de quantos alunos

Answer 1

4 _____ 20%
x _____ 100%

20x = 4 * 100
20x = 400
x = 400 / 20
x = 20

20% de 20 = 4

R: 4 alunos representam 20% de 20 alunos.