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A car is traveling at a uniform speed. The driver sees a milestone showing a 2-digit number. After traveling for an hour the driver sees another milestone with the same digits in reverse order. After another hour the driver sees another milestone containing the same two digits separated by a zero. What is the average speed of the driver?

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The milestones are 12, 21 and 102.
ANS: Total dist. traveled is= 90 km
Total time taken = 2 hrs.
So, avg speed = 45 km/hr
13 years agoHelpfull: Yes(2) No(1)

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