A train 270 m long is moving at a speed of 24 kmph. It will cross a man coming from the opposite direction at a speed of 3 kmph in

36 sec

Speed = \(\frac{ Distance}{ Time}\)

(24 + 3) x \(\frac{5 }{18}\)= \(\frac{ 270}{ Time}\) 

(27) x \(\frac{5 }{18}\)= \(\frac{ 270}{ Time}\) 

(3) x \(\frac{5 }{2}\)= \(\frac{ 270}{ Time}\) 

 \(\frac{15 }{2}\)= \(\frac{ 270}{ Time}\) 

Time = \(\frac{ \text{270 x 2 }}{15}\) 

Time = 36 sec