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March 30, 2017

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A pineapple drink contains 15% pineapple juice. How much pure pineapple juice should be added to 8 quarts of the drink to obtain a mixture containing 50% pineapple juice.

  • Algebra 1 honors - ,

    .15*8+X=.5(8+X)
    1.2+X=4+.5X
    X-.5X=4-1.2
    .5X=2.8
    X=2.8/.5
    X=5.6 QTS. OF PURE PINEAPPLE JUICE IS USED.
    PROOF:
    .15*8+5.6=.5(8+5.6)
    1.2+5.6=.5*13.6
    6.8=6.8

  • Algebra 1 - ,

    How many quarts of pure pineapple juice should Theo add to a 20% pineapple drink to create 5 quarts of 50% of pineapple juice mixture?

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