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29 September, 22:51

Melinda starts with $22 and saves $10 each week. George starts with $10 and saves $13 each week. After how many weeks will they have the same amount saved?

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Answers (2)
  1. 29 September, 23:09
    0
    Answer: 4

    Step-by-step explanation:

    Melinda: y = 10x + 22

    George: y = 13x + 10

    13x + 10 = 10x + 22

    -10x - 10x

    3x + 10 = 22

    -10 - 10

    3x = 12

    :3 : 3

    x = 4
  2. 29 September, 23:15
    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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