Problems on Trains · Question 6 · Medium
Problems on Trains question 6
Two trains of lengths 120 m and 180 m run on parallel tracks in opposite directions at 60 km/h and 48 km/h. How long will they take to cross each other completely?
- 10 seconds
- 20 seconds
- 12 seconds
- 90 seconds
Answer and explanation
Answer: A. 10 seconds
Explanation: Relative speed = 60 + 48 = 108 km/h = 30 m/s. Total length = 300 m. Time = 300 ÷ 30 = 10 seconds.
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