A train travels a distance at a speed of 40 km/h and returns at the speed of 60 km/h. What is the average speed of the train?
Answers
Given : A train travels a distance at a speed of 40 km/h and returns at the speed of 60 km/h.
To Find : the average speed of the train
Solution:
Assume that distance is 120x km
Time = Distance / Speed
Time taken in going = 120x/40 = 3x hr
Time taken in return = 120x/60 = 2x hr
Total Time taken = 3x + 2x = 5x hr
Total distance = 120x + 120x = 240x km
Average Speed = 240x/5x = 48 km/hr
the average speed of the train = 48 km/hr
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Given:
A train travels a distance at a speed of 40 km/h and returns at the speed of 60 km/h.
To find:
Average speed of train?
Calculation:
Average speed is defined as the ratio of total distance to the total time taken.
So, average speed is 48 km/hr.