the distance between Rampur and sample is 120 km .a train travelling the first 30 km at a uniform speed of 30 km per hour .how fast the train should travel to cover the rest of the third 90 km so as to average speed is 60 km per hour for the entire trip.
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xhduthhj
tkffitit and enter In 2nd to ys 792nd is
tkffitit and enter In 2nd to ys 792nd is
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