Two trains are running at 40 km hr and 20 km hr respectively in the same direction If the faster tra...........

Quantitative Aptitude ( CCS) Problems on trains

Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. If the faster train completely passes a man sitting in the slower train in 5 seconds, the length of the faster train is:

19 metre

27 7/9 metre

13 2/9 meter

33 meter

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Explanation:

Relative speed =(40−20) = 20 km/hr
=20×5/18 = 50/9 m/s
Time =5 seconds
Distance = 50/9×5 = 250/9 = 27 7/9 metre
⇒ Length of the faster train =27 7/9 metre

Hence, option 2 is the correct answer.