A train is moving at a speed of 132 kmph. If the length of the train is 110 meters, how long will it take to cross a railway platform 165 m long?

5 sec 7.5 sec 10 sec 15 sec

7.5 sec

Speed = \(\frac{ Distance}{ Time}\) 132 x \(\frac{5 }{ 18}\) = \(\frac{\text{ 110 + 165} }{ Time}\) \(\frac{660 }{ 18}\) =  \(\frac{\text{ 275} }{ Time}\) Time = 7.5 seconds