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- Question
- A train 110 m long travels at 60 km/hr. How long does it take to cross a platform 240 metres long?
Options- A. 21 sec
- B. 20 sec
- C. 18 sec
- D. 24 sec
- Correct Answer
- 21 sec
ExplanationDistance covered = 110 + 240 = 350 m
Speed = 60 km/ph = 60 x (5/18) m/s = 50/3 m/sec.
Time = distance / speed = 350 x 3 / 50 = 21 sec. - 1. A train 50 m long passes a platform 100 m long in 10 seconds. The speed of the train in m/sec is?
Options- A. 150
- B. 50
- C. 10
- D. 15 Discuss
- 2. A train 240 m long passes a bridge 120 m long in 24 sec. Find the speed with which the train in moving?
Options- A. 45 km/hr.
- B. 54 km/hr.
- C. 36 km/hr.
- D. 42 km/hr. Discuss
- 3. A train 110 metres long travels at 60 km/hr. How long does it take to cross a telegraph post?
Options- A. 5 sec.
- B. 5.6 sec
- C. 6.6 sec
- D. 6.8 sec Discuss
- 4. A train 550 metres long is running with a speed of 55 km per hour. In what time will it pass a signal post?
Options- A. 30 sec
- B. 24 sec
- C. 42 sec
- D. 36 sec Discuss
- 5. A train 135 metres long is running with a speed of 54 km per hour. In what time will it pass a telegraph post?
Options- A. 9 sec
- B. 12 sec
- C. 8 sec
- D. 6 sec Discuss
- 6. A train 110 metres in length travels at 60 km/hr.In what time will it pass a man which is walking against the train at 6 km an hour?
Options- A. 71/3 seconds
- B. 6 seconds
- C. 62/3 seconds
- D. Data inadequate Discuss
- 7. Two trains 70 m and 80 m long respectively, run at the rates of 68 km and 40 km an hour respectively, on parallel rails in opposite directions. How long do they take to pass each other?
Options- A. 5 seconds
- B. 10 seconds
- C. 12 seconds
- D. 6 seconds Discuss
- 8. A person see a train passing over 1 km long bridge. The length of the train is half that of bridge. If the train clears the bridge in 2 minutes the speed of the train is?
Options- A. 50 km/hr
- B. 45 km/hr
- C. 60 km/hr
- D. 30km/hr Discuss
- 9. A train 50 meters long passes a platform 100 m long in 10 second. The speed of the train is?
Options- A. 10 km/hr
- B. 15 km/hr
- C. 54 km/hr
- D. 100 km/hr Discuss
- 10. A train covers 90 m in passing a standing man. Find the length of the train.
Options- A. 20 m
- B. 87 m
- C. 71 m
- D. 90 m Discuss
Problems on Trains
Search Results
Correct Answer: 15
Explanation:
Speed of train = distance covered / time.
= (50 + 100) / 10
= 15 m/sec.
Correct Answer: 54 km/hr.
Explanation:
Required speed = (240 + 120) / 24 = 15 m/sec
= 15 x (18/5) km/hr = 54 km/hr
Correct Answer: 6.6 sec
Explanation:
Time = distance / speed
=110 / {60 x 18/5} = 6.6 sec.
Correct Answer: 36 sec
Explanation:
Distance covered = 550 meter. = 0.55 km
Speed of the train = 55 km/hr
So time taken = 0.55 / 55 =1/100 hr = (60 x 60 )/100 sec = 36 sec
Correct Answer: 9 sec
Explanation:
Distance traveled = length of the train = 135 m
Speed of the train = 54 Km/hr = 54 x 5/18 = 15 m/s.
Time taken by train = 135 / 15 sec. = 9 sec.
Correct Answer: 6 seconds
Explanation:
? Relative speed of the train = 60 + 6 = 66 km/hr
= 66 x 5/18 m/sec = 55/3 m/sec
? Required time = 110 x (3/55) = 6 sec
Correct Answer: 5 seconds
Explanation:
Total distance = 70 + 80 = 150 m
Relative speed = 68 + 40 = 108 kmph = 108 x (5/18) = 30 m/s
So time taken = 150 / 30 = 5 seconds.
Correct Answer: 45 km/hr
Explanation:
Distance covered in 2/60 hours = (1 + 1/2) = 3/2 km
Distance covered in 1 hour = (3/2) x (60/2) = 45 km
So, speed of the train = 45 km/hr
Correct Answer: 54 km/hr
Explanation:
Distance covered by train in 10 sec = (50 + 100) = 150 m
? Speed = 150/10 m/sec = 15 x (18/5) = 54 km/hr
Correct Answer: 90 m
Explanation:
We know that, the distance covered by a train in passing a pole or a standing man or a signal post or any other object (of negligible length) is equal to the length of the train.
In this case, train covers 90 m to cross a standing man.
? Length of the train = 90 m
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