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28 September, 00:20

Melinda has $22 and plans to save $10 each week. George has $10 and plans to save $13 each week.

In how many weeks will they have the same amount saved?

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Answers (2)
  1. 28 September, 01:29
    0
    22+10x=10+13x

    13x-10x=22-10

    3x=12

    x=4

    Answer:4 weeks
  2. 28 September, 02:26
    0
    Lets say Y is the amount they will save.

    So Melinda's savings could be described by the equation Y=22+10X, where X is the number of weeks. The same goes to George, but his equation would be Y=10+13X.

    To save the same amount, their equations must match:

    22+10X = 10+13X

    Solving this, one gets

    12 = 3x

    => 4=x

    So the answer is 4 weeks.
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