Speed of a train is 90 km/hr. This train crosses a platform in 54 seconds. Length of the platform is double of the length of the train. What is the length (in metres) of the train?
Show answer & explanation
Correct answer: A
Explanation
Speed of the train = 90 km/h
= 90 × 5/18 = 25 m/s
Let the length of the train = x
Length of the platform = 2x
Total distance = 3x
Distance = Speed × Time
3x = 25 × 54
3x = 1350
x = 450 meters