on a 120 km track a train Moves the first 30 km at a uniform speed of 30 km per hour how much how fast much the train move in next 90km so the average speed 60 km per hour for the entire trip
yash1175:
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train should move at the speed of 90 km/hour for next 90 km.
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Use AVG speed formula that is total distance/total time then u get 60=120/1+(90/v) because time taken to travel first 30 km will be 1 hour and time taken for next 90 km is 90/v
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