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Q: The length of two superfast trains are 140 mts and 160 mts respectively. If they run at the speed of 60 km/hr and 80 km/hr respectively in opposite direction, find the time in which they will cross each other ?

  • 1
    7.71 sec
  • 2
    10.48 sec
  • 3
    9.36 sec
  • 4
    8.45 sec
  • Show Answer
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Answer : 1. "7.71 sec"
Explanation :

Answer: A) 7.71 sec Explanation: Given L1 = 140 m L2 = 160 m S1 = 60 km/hr S2 = 80 km/hr From the question we get, S1 + S2 = (L1 + L2) / T => (60 + 80) 5/18 m/s = 140 + 160/T => T = 54/7 = 7.71 sec

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