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March 27, 2017

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A bicycle travels 42 meters for every 20 revolutions of the wheel. How many revolutions would the wheel make in a kilometer?

  • High school - ,

    Maths

  • Math - ,

    use a simple ratio
    let the number of revolutions in 1 km be n

    n/1000 = 20/42
    x = 1000(20/42) = 10000/21 or appr 476.2 revolutions

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