A

Admin • 825.56K Points
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Q. A train takes 18 seconds to cross a platform 90 m long and 6 seconds to cross a pole. What is the speed of the train?

  • (A) 36 km/h
  • (B) 45 km/h
  • (C) 54 km/h
  • (D) 60 km/h
Explanation by: Admin
Train length = x; Speed = x/6; (x+90)/18 = x/6 → x=75 m → Speed = 75/6 = 12.5 m/s = 45 km/h.

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