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28 July, 19:40

The diameter of each wheel of a bicycle is 28 inches28 inches. if you are traveling at a speed of 15 miles per hour15 miles per hour on this bicycle, through how many revolutions per minute are the wheels turning

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  1. 28 July, 19:52
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    1 mile is 5280 feet, which is 63360 inches

    15 miles is 63360*15=950400 inches

    15 miles per hour=950400 inches/60 minutes = 15840 inches/minute

    next, find the perimeter of the wheel: C=π*D=28π

    15840:28π = about 180 revolutions per minute
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