Algebra 1

A girl scout troop sold cookies. If the girls sold 5 more boxes the second week than they did the first, and if they doubled the sales of the second week for the third week to sell a total of 431 boxes of cookies, how many did they sell each week?

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asked by Monica
  1. Say x is the number of boxes sold in week 1, then:

    Boxes in week 1: x
    Boxes in week 2: x + 5
    Boxes in week 3: 2x + 10

    Total boxes = 4x + 15
    4x + 15 = 431
    x = 104

    So in week 1 there was sold
    x = 104
    in week 2:
    x + 5 = 109
    in week 3:
    2x + 10 = 218

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    posted by Tom
  2. Yea i juss did the problem on paper an got the same answer. Thank yu :)

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    posted by Monica

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