Algebra (please help!)

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Mary has a solution that is 60% alcohol and another that is 20% alcohol. How much of each should she use to make 100 milliliters of a solution that is 52% alcohol.

I totally forget how to do this kind of problem. Please help if you can! Thank you so much! :)

  • Algebra (please help!) -

    let the amount of the 60% solution be x ml
    then the amount of the 20% solution must be (100-x) ml
    then isn't .6x + .2(100-x) = .52(100) ?

    solve for x

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