Question

pinte 20% dos quadrados 20/100 e igual a x/15

Answer 1

Boa tarde

20/100 = x/15 

100x = 300
x = 300/100 = 3 

Answer 2

20/100 = x/15
x = (20.15) : 100
x = 300 : 100
x = 3

Resposta: 3