Problems on Trains - General Questions (3)
| 17. | A train 110 metres long is running with a speed of 60 kmph. In what time will it pass a man who is running at 6 kmph in the direction opposite to that in which the train is going? |
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Answer: Option B Explanation: Speed of train relative to man = (60 + 6) km/hr = 66 km/hr.
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m/sec
Time taken to pass the man =| 18. | Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time (in seconds) which they take to cross each other, is: |
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Answer: Option D Explanation:
Distance covered in crossing each other = (140 + 160) m = 300 m.
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| 19. | Two trains, each 100 m long, moving in opposite directions, cross each other in 8 seconds. If one is moving twice as fast the other, then the speed of the faster train is: |
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Answer: Option C Explanation: Let the speed of the slower train be x m/sec. Then, speed of the faster train = 2x m/sec. Relative speed = (x + 2x) m/sec = 3x m/sec.
= 60 km/hr. |
24x = 200| 20. | A goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 26 seconds. What is the length of the goods train? |
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Answer: Option D Explanation:
Time = 26 sec. Let the length of the train be x metres.
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| 21. | A 270 metres long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train? |
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Answer: Option A Explanation: Relative speed = (120 + 80) km/hr
Let the length of the other train be x metres.
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| 22. | A jogger running at 9 kmph alongside a railway track in 240 metres ahead of the engine of a 120 metres long train running at 45 kmph in the same direction. In how much time will the train pass the jogger? |
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Answer: Option C Explanation: Speed of train relative to jogger = (45 - 9) km/hr = 36 km/hr.
= 10 m/sec. Distance to be covered = (240 + 120) m = 360 m.
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| 23. | Two trains are moving in opposite directions @ 60 km/hr and 90 km/hr. Their lengths are 1.10 km and 0.9 km respectively. The time taken by the slower train to cross the faster train in seconds is: |
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Answer: Option C Explanation: Relative speed = (60+ 90) km/hr
Distance covered = (1.10 + 0.9) km = 2 km = 2000 m.
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| 24. | A train 360 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long? |
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Answer: Option A Explanation:
Total distance to be covered = (360 + 140) m = 500 m.
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