A train requires 7 sec. to pass a pole while it requires 25 sec to cross a stationary train which is 378 m. long. Find the speed of the train in kmph
75.6
75.4
70.8
21
76.2
In 7 seconds train is crossing pole and in 25 seconds it is crossing a train of 378 meters.
From this line, we can conclude that in another 18 seconds he covered 378 meters.
So, Speed of train = 378/18 => 21 m/s
Speed in Km/h = 21 x 18/5 => 75.6 Km/hr