Respostas

2014-03-09T18:06:54-03:00
 \frac{x}{100} . 150 = 12

150 x = 1200
x = 1200/150
x = 8

Logo, 8%.
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2014-03-09T18:07:03-03:00
150  100%
12      x


150.x = 12 . 100
  x = 1200  / 150
  x = 8%
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