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Question

Vande Bharat Express of length 250 meters running at 100 km/hr. It crosses Tejas Express which is moving in the opposite direction at 90 km/hr in 12 seconds. Find the length of the other train?

  • 200
  • 205
  • 210
  • 220
Answer- B

Relative Speed = 100 + 90= 190 km/hr

Relative Speed in m/s= 190 x 5/18 = 455/9 m/s

Let the length of the other train is = X meters

Now Relative Speed = (250+X)/12

(250+X)/12 = 455/9

750 + 3X = 1365

3x = 615

X = 205.