A train travels with a uniform speed of 20kmh and covers a distance of 40 km from station A If the total distance between station A and B is 160km , how fast should the train travel for the remaining distance to reach station B , so that it's average speed for the entire journey is 40kmh.
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Similarly, time taken by train to cover 40 km at a speed of 20 km/hr. ∴ Remaining Speed = 120/2 = 60 km/hr.
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