Respostas

2014-03-13T21:57:38-03:00
50=100%
38=x

x=(38*100)/50
x=3800/50
x=76%
1 5 1
2014-03-13T22:00:41-03:00
100% corresponde a 50
x%    corresponde a 38
  \frac{100}{x} =  \frac{50}{38}
50x = 3800
5x = 380
x= 76%
1 5 1