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Algebra

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Kristen wants to make 7.5 ounces of a 25% jasmine essential oil. She only has a 15% jasmine mixture and a 30% jasmine mixture available. How much of each mixture should she combine to create the desired oil?

  • Algebra -

    let the amount of the 15% mixture be x ounces
    then the amount of the 30% mix is 7.5-x

    .15x + .30(7.5-x) = .25(7.5)
    times 100

    15x + 30(7.5-x) = 25(7.5)
    15x + 225 - 30x = 187.5
    -15x = -37.5
    x = 2.5

    Use 2.5 ounces of the 15% mix and
    5 ounces of the 30% mix

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