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19 June, 02:04

Marcia ran at a speed of 3.50 meters per second. How fast was she running in kilometers per hour?

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  1. 19 June, 03:17
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    3.5 meters per second

    60sec=1min

    60min=1 hr

    3.5*60*60 = meters per hour

    =12600

    1000meter = 1 km

    12600/1000 = km per hr

    =12.6 km per hour
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