Distance between two stations a and b is 778 kms. A train covers the journey from a to b at 84 kms per hour and returns back to a with a uniform speed of 56 kms per hour. Find the average speed of the train during the whole journey?
Answers
Answered by
2
t1 = 778 km / 84 km/hr = 9.26 hrs
t1 = 778 km / 56 km/hr = 13.9 hrs
T = total time = 23.2 hrs
S (total distance) = 2 * 778 km = 1556 km
V(avg) = 1556 km / 23.2 hr = 67 km/hr
Similar questions