Two trains from station a and b run towards each other there speed is 50 km / hour and 60 km / hour respectively, if the second train has reached 120 km more than the first train. The distance between a and b is
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The second train has travelled 120 km more than the first train only because the speed of the second train is 10 km/h. more than the first train and their starting time is same.
Time taken by the second train to cover 120 kms with the surplus speed of 10 km/h
=120/10=12 hrs
i.e. time, taken by the both train before meeting point in opposite direction = 12 hrs.
Their relative speed in oppo. direction
=(50+60) km/h = 110 km/hr
Total distance covered by them
=12×110= 1320
So the distance between A and B= 1320 km
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Answer:
the distance between A and B is 1320 km
hope it helps
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