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2014-05-23T20:18:37+08:00

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Just divide the distance it traveled by the time it took it to travel.

Converting time to hours, we have
1 hour 40 minutes = 1 2/3 hours or 100 mins

117km / 100 mins = 1.17km/min     or
117km / 1.67 hours ≈ 70.1 km/hr
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2014-05-23T22:07:42+08:00

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It is 50 kilometers per hour
 
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