a train covers a distance of 60 kilometre at a speed of 20km per hour and then covers a distance of 80 km at a speed of 40km per hour. find the average speed of the train for the journey
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Answer:The total distance which train have to cover is 80 km. Now train covers 60 km at the speed of 40km/h. Time taken to cover this distance (t1)= d/s= 60/40= 3/2 hrs. Further train covers 20km (remaining distance) at the speed of 20km/h.
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