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8 October, 20:38

If I did 57 jumping jacks in 1 minute how long would it take to do 100 jumping jacks

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Answers (2)
  1. 8 October, 20:55
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    2 minuets
  2. 8 October, 21:03
    0
    Set up a ratio:

    57 jumping jacks / 1 minute = 100 jumping jacks / x minutes

    Cross multiply:

    57x = 100

    Divide both sides by 57:

    X = 100/57

    X = 1.754 minutes = 1 minute 45 seconds
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