Respostas

2014-08-05T11:38:03-03:00
12,50 ------------ 10 m
x --------------- 3 metros
10x = 37,50
x = 37,50 / 10
x = 3,75 
2014-08-05T11:38:11-03:00
12,50 / 10 = 1,25

1,25 . 3 = 3,75