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    patman510's Avatar
    patman510 Posts: 1, Reputation: 1
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    #1

    Sep 16, 2010, 11:32 PM
    Algebra % mixture problem
    A chemistry experiment requires 140 milliliters of a 30% copper sulfate solution. There is a 25% solution and a 60% solution how many milliliters of each solution should be mixed to obtain the needed solution
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Sep 17, 2010, 02:07 AM

    Let x= the amount of 25% needed.

    Since the chemist needs 140 ml total, the amount of 60% would be 140-x.

    Both must sum to 140 ml of the 30%.



    solve for x.

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