Math (Algebra)

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Again please NO answers! Only on how to solve.

One canned juice drink is 20% orange juice; another is 5% orange juice. How many liters of each should be mixed together in order to get 15L that is 14% orange juice?

  • Math (Algebra) -

    .2 x + .05 y = .14 (x+y)
    and
    x+y = 15

  • Math (Algebra) -

    O.J.=(0.14)(15)=2.1 lit ers.

    1. 0.2X+0.05Y=2.1
    2. X + Y = 15
    To solve by elimination,multiply
    both sides of equation 1 by(-)5:

    -X-o.25Y=-10.5
    X + Y = 15

    Y = 6 liters @ 5% O.J.
    X = 9 liters @ 20 % O.J.

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