A

Admin • 825.56K Points
Coach

Q. A train crosses a man walking at 6 km/h in same direction in 10 seconds. If the train speed is 42 km/h, what is the length of the train?

  • (A) 80 m
  • (B) 90 m
  • (C) 100 m
  • (D) 120 m
Explanation by: Admin
Relative speed = (42−6)×5/18 = 10 m/s → Length = 10×10 = 100 m.

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