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Math Help - Need Help!!!

  1. #1
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    Exclamation Need Help!!!

    How many gallons of 40 percent alcohol solution must be mixed with 70 percent solution to obtain 30 gallons of a 52 percent alcohol solution?
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  2. #2
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    math help

    posted by apple 2009

    alcohol mix

    1 set up an equation in x as thelean fraction and 30-x the rich fraction. The sum of the alc in each fraction in terms of x = 30 times .52
    2 use the lever principle

    52-40= 12 the rich fraction
    70-52= 18 the lean fraction
    This is your answer . Your equation must get the same result

    bjh
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