A train 150 m long takes 20 seconds to cross a platform 450 m long. The speed of the train (in m/sec) is
Answer & explanation
Correct answer: option 2
Speed = \(\frac{ Distance}{ Time}\)
Speed = \(\frac{\text{150 + 450}}{ 20}\)
Speed = \(\frac{ 600}{ 20}\)
Speed = 30 m/s