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14 October, 22:45

Bill weighs 120 lbs and is gaining ten lbs each month. Phil weighs 150 lbs and is gaining four lbs each month. How many months will it take for bill to wiegh the same as phil?

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Answers (2)
  1. 15 October, 00:56
    0
    130,154

    140.158

    150.162

    160,166

    170,170

    It will take Bill 5 weeks to be the same weight as phil
  2. 15 October, 01:27
    0
    First, let's write two expressions, letting x = the number of months which have elapsed:

    Bill: 120 + 10x

    Phil: 150 + 4x

    If we set them equal to each other, then solve for x, that will be the number of months where their weights equal each other:

    120+10x = 150 + 4x [starting equation]

    -120 - 4x - 120 - 4x [ subtract 120 from both sides, and 4x from both sides, to isolate the term with the variable]

    6x = 30 [divide both sides by 5]

    5 5

    x=6. They will weigh the same in six months.
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