a train covers a distance of 600 km at an average speed of 60km/h. however while returning it maintained its a average speed of first two hours and then runs with an average speed of 40km/h . how much time will the train take while returning to cover the distance
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Answer:
20km/h
Step-by-step explanation:
- Intial speed of the train u=60km/h
- Final speed of the train v =40km/h
- u-v
- 60-40km/h
- 20km/h
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