Length of a train is 330 metres and it is moving at the speed of 72 km/hr. In how much time will it takes cross a platform of length 710 metres?

A. 72 seconds

B. 56 seconds

C. 64 seconds

D. 52 seconds

Answer: Option D

Solution(By Examveda Team)

$$\eqalign{ & {\text{Time}} = \frac{{330 + 710}}{{72 \times \frac{5}{{18}}}}{\text{ Sec}}{\text{.}} \cr & = \frac{{1040}}{{20}}{\text{ Sec}}{\text{.}} \cr & = 52{\text{ Sec}}{\text{.}} \cr} $$