Problems on Trains · Question 7 · Medium
Problems on Trains question 7
A 200 m train at 75 km/h overtakes a 250 m train moving at 57 km/h in the same direction on a parallel track. How long does the overtaking take?
- 12 seconds
- 90 seconds
- 40 seconds
- 50 seconds
Answer and explanation
Answer: B. 90 seconds
Explanation: Relative speed = 75 − 57 = 18 km/h = 5 m/s. Distance = 200 + 250 = 450 m. Time = 450 ÷ 5 = 90 seconds.
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