Speed = 60*(5/18) m/sec = 50/3 m/sec
Length of Train (Distance) = Speed * Time
(50/3) * 15 = 350 meter
A train running at the speed of 60 km/hr crosses a pole in 21 seconds. Find the length of the train.

  * 350 m
  * 145 m
  * 240 m
  * 135 m
  * 255 m