A train runs from station A to station B in 1.5 hours, covering a distance of 50 kms, then from 'station B to station C in 1.5 hours, covering a distance of 60 kms and then from station C to station D in 1.5 hours, covering a distance of 70 kms. What is the average speed of the train from A to D? 1) 65 km/hour 2) 50 km/hour 3) 40 km/hour 4) 35 km/hour 5) 60 km/hour
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60km/hr is the correct answer
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