Question

What is the ratio between times taken by a train $240$ m long to cross an electric pole and a bridge of $80$ m length?

• A. $2:3$
• B. $3:4$
• C. $4:5$
• D. $5:6$

Answer 1

The correct option is B $3:4$

Distance to be covered by the train in such two situations is $240$ and $(240+80)$ i.e. $320$.

Time is proportional to the distance.
Therefore, required ratio $=240:320$
$=3:4$