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kdemaught
In the lab, Ahmad has two solutions that contain alcohol and is mixing them with each other. He uses twice as much Solution A as Solution B. Solution A is 19% alcohol and Solution B is 15% alcohol. How many milliliters of Solution A does he use, if the resulting mixture has 159 milliliters of pure alcohol?
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She/He drank the alcoholic solution! ;-)
so A = 2B and .19A + .15B = 159