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Math Help - Word Problem

  1. #1
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    Word Problem

    One canned juice drink is 25% O.J, another is 10% O.J. How many liters of each should be mixed together in order to get 15L that is 21% O.J.?
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  2. #2
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    Anyone? I really need help with this problem. It is the last question. Thank you.
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  3. #3
    Grand Panjandrum
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    Quote Originally Posted by sh0rtys463
    One canned juice drink is 25% O.J, another is 10% O.J. How many liters of each should be mixed together in order to get 15L that is 21% O.J.?
    Mix together x litres of J1, and y litres of J2.

    Then:

    <br />
x+y=15\ \ \ <br />
(to give 15 litres of juice)

    and

    <br />
0.25\times x +0.1 \times y=0.21 \times 15\ \ \ <br />
(this is the amount of juice in the product)

    Now your problem is to solve these simultaneous linear equations.

    RonL
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