Question

A $150\text{m}$ long train is moving with a uniform velocity of $45\text{km/h}$. The time taken by the train to cross a bridge of length $850\text{m}$ is

• A. 56 sec
• B. 68 sec
• C. 80 sec
• D. 92 sec

Answer 1

The correct option is C 80 sec

Total distance to be covered for crossing the bridge = length of train + length of bridge
$=150\text{m}+850\text{m}=1000\text{m}$
$\text{Time}=\frac{\text{Distance}}{\text{Velocity}}=\frac{1000}{45\times \frac{5}{18}}=80\text{sec}$