Distance between two stations A and B is 778 km. A train covers the journey from A to B at 84 km per hour and returns back to A with a uniform speed of 56 km per hour. Find the average speed of the train during the whole journey.

(a) 67.2 km/hr. (b) 67.8 km/hr. (c) 65.7 km/hr. (d) 66.2 km/hr

Distance between two stations A and B is 778 km. A train covers the journey from A to B at 84 km per hour and returns back to A with a uniform speed of 56 km per hour. Find the average speed of the train during the whole journey.

(a) 67.2 km/hr. (b) 67.8 km/hr. (c) 65.7 km/hr. (d) 66.2 km/hr

1 Answer

127 votes

Required average speed = km/hr = km/hr = 67.2 km/hr.

127 votes

127