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OpenStudy (anonymous):
Ben wishes to strength a mixture from 10% alcohol to 30% alcohol. How much pure alcohol should be added to 7L of the 10% mixture?
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OpenStudy (anonymous):
let x = the amount of alcohol added, youll get this equation: (0.7 + x) / (7+x) = 30/100, 70 + 100x = 210 + 30x 70x = 140 x=2
OpenStudy (anonymous):
This guy is correct ^^
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