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28 February, 00:50

Susan, Chang, and Henry sent a total of 127 text messages over their cell phones during the weekend. Chang sent 3 times as many messages as Henry. Henry sent 7 fewer messages than Susan. How many messages did they each send?

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  1. 28 February, 01:27
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    c = 72, h = 24, s = 31

    Step-by-step explanation:

    You can derive the following equations from the text:

    s+c+h=127

    c=3h

    h=s-7

    Solving them yields above answer.
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