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Q: Two trains 85 m and 75 m long are running in same direction with speeds of 62 km/hr and 44 km/hr respectively. In what time will the first train cross the second train ?

  • 1
    22 sec
  • 2
    32 sec
  • 3
    42 sec
  • 4
    52 sec
  • Show Answer
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Answer : 2. "32 sec"
Explanation :

Answer: B) 32 sec Explanation: Given that, 1st train speed = 62 km/hr  2nd train speed  = 44 km/hr Hence the relative speed of two trains is : 62-44 = 18 km/hr = 18×518 m/s = 5 m/s. There fore, the first train crosses the second train i.e (85+75)mts of distance with a speed of 5m/s in,    time = distancespeed = 85+755 = 32 sec.

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