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Mathematics 7 Online
OpenStudy (anonymous):

a chemist has 12 gallons of alcohol. he draws out 3 gallons and replaces it with water. he draws out 3 gallons of the mixture, again replacing it with water. after five such operations what is the amount of alcohol in gallons left in the mixture

OpenStudy (xmoses1):

I dont know how to do this :( sorry

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