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