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luiz guerra's Profile
Star Rating: [2 
]
Member Since: May 16, 2013
Total # Questions Provided: 1
Total # Answers Provided: 0
]
Member Since: May 16, 2013
Total # Questions Provided: 1
Total # Answers Provided: 0
mai
16
2013
Problema de matemática e porcentagem
tenho uma mistura de 120 litros de gasolina e alcool,sendo que destes 70% são de gasolina.foi retirado desta mistura 30 litros e colocado 25 litros de alcool e 5 litros de agua.preciso saber qual a porcentagem...
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