Respostas

2014-04-11T20:35:05-03:00
15% ----- 210
100%  ----- x

15x = 210.100
x = 21000/15
x = 1400
R = R$ 1400,00
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2014-04-11T20:35:26-03:00

15% - 210
100% - x
15x=21000
x= 21000/15
R$ 1.400,00

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