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28 October, 03:58

Roy weighs 150 pounds and plans to lose 1.5 pounds a week. Luis weighs 200 pounds and plans to lose 2.5

pounds a week. Which equation shows when Roy and Luis will weigh the same?

Use x for the number of weeks.

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Answers (2)
  1. 28 October, 06:38
    0
    150-1.5x = 200-2.5x
  2. 28 October, 07:52
    0
    Roy: y=150-1.5x

    Luis: y=200-2.5x

    150-1.5x=200-2.5x

    150=200-x

    -50=-x

    50=x

    So in 50 weeks, Roy and Luis will weigh the same at 75 pounds each.
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