A train covers a distance of 12 km in 10 min. If it takes 6 sec to pass a telegr

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Question
A train covers a distance of 12 km in 10 min. If it takes 6 sec to pass a telegraph post, the length of the train is
Options
A. 90 m
B. 100 m
C. 120 m
D. 140 m

Correct Answer

120 m

Explanation

Speed of the train = 12000 / 10*60 = 20 m/s

Length of the train = Speed X time = 20 X 6 = 120m

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Problems on Trains

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1. A uniformly moving train of length 480 m takes 3 minutes to completely cross a platform. If the same train, with the same speed crosses a pole completely in 30 sec, then the length of the platform is -
Options
A. 1 km
B. 600 m
C. 4.8 km
D. 1.2 km

2. Train A takes 1 hour more than train B to travel a distance of 720 km. Due to engine trouble speed of train B falls by a third, so it takes 3 hours more than Train A to complete the same journey? What is the speed of Train A (in km/hr)?
Options
A. 80
B. 90
C. 60
D. 70

4. The ratio of the speed of Two trains is 5:8. Sum of their length is 660. The ratio of time taken to cross an Electric Pole by train A and B is 4:3. What is the difference between the length of two trains?
Options
A. 50m
B. 40m
C. 60m
D. 45m

5. Train A can cross a man in 8 sec and a 180 m long platform ?P? in 17 sec. If train A cross train B which is running in opposite direction at speed of 108 km/hr in 8 sec, then find time taken by train B to cross platform P?
Options
A. 16 sec
B. 11 sec
C. 14 sec
D. 12 sec

6. A passenger train running at the speed of 80 kms/hr leaves the railway station 6 hours after a goods train leaves and overtakes it in 4 hours. What is the speed of the goods train?
Options
A. 32 kms/hr
B. 50 kms/hr
C. 45 kms/hr
D. 64 kms/hr

7. A train left from station A for station B at 4 pm at an average speed of 80 kmph. At 8 pm, another train also had left from station A for station B on a parallel track at an average speed of 120 kmph. How far from A is another train expected to overtake the first train?
Options
A. 900km
B. 940km
C. 960km
D. 980km

8. A train travels 40% faster than a car. Both start from point A at the same time and reach point B, 140 km away at the same time. On the way the train takes 25 minutes for stopping at the stations. What is the speed (in km/hr) of the train?
Options
A. 67
B. 134.4
C. 145.9
D. 160

10. Two trains are moving in the opposite directions at speed of 43 km/h and 51 km/h respectively. The time taken by the slower train to cross a man sitting in the faster train is 9 seconds. What is the length (in metres) of the slower train?
Options
A. 235
B. 338.4
C. 470
D. 940

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