algebra

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The owner of a health food store combined cranberry juice that cost $7.79 per quart with apple juice that cost $7.19 per quart. how many quarts of each were used to make 10 quarts of cranberry juice mixture costing $7.61 per quart

  • algebra -

    7.79x + 7.19(10-x) = 7.61(10)
    x = 7

    so,
    7 quarts at 7.79
    3 quarts at 7.19

    makes sense, since 7.61 is near to 7.79

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