Respostas

2014-07-18T14:38:46-03:00
1500 - 100%
225 - x%

X= 225.100/1500= 15%
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2014-07-18T14:45:17-03:00
1500 ---- 100%
 225,00 --- x
multiplica inverso

1500x=225*100
1500x=22500
x=22500/1500
x=15%

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