Two trains of the same length are running on parallel tracks in the same direction at 54 km/h and 42 km/h respectively. The faster train passes the other train in 60 seconds. What is the length (in metres) of each train?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e 100
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Concept |
Understanding |
Application |
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When running in same directions, relative speed is the difference of two speeds. Distance = Speed × Time |
Speeds = 54 & 42 km/hr And The faster train passes the other train in 60 seconds
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Relative speed = (54 - 42) = 12 km/hr Combined length = (12/60) × 100 = 200m Length of each train = 100m |