business and finance

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Peter Mabel sold a total of 400 Oatmeal ($1.50) and Wheat
($2) breads during the Labor Day weekend. How many of
each did Pete sell if total sales were $700?

  • business and finance -

    Sold:
    X Oatmeals.
    (400-X) Wheats.

    3x/2 + 2(400-x) = $700.
    Multiply both sides by 2:
    3x + 4(400-x) = 1400
    3x + 1600 - 4x = 1400
    -x = 1400 - 1600 = -200
    X = 200.
    (400-x) = 400 - 200 = 200.

    NOTE: 1.50x = (1 1/2)x = (3/2)x = 3x/2.

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