A train travelling at 36 km/h crosses a pole in 25 second. How much time (in second) will it take to cross a bridge 350 m long?

Solution (By Examveda Team)

$$\eqalign{ & {\text{Let the length of train}} \Rightarrow x \cr & 36 \times \frac{5}{{18}} = \frac{x}{{25}} \cr & x = 250 \cr & {\text{Now,}} \cr & 36 \times \frac{5}{{18}} = \frac{{350 + 250}}{t} \cr & t = 60{\text{ second}} \cr} $$