Discussion of Question with ID = 017 under Problems-on-Trains

This is the discussion forum for this question. If you find any mistakes in the solution, or if you have a better solution, then this is the right place to discuss. A healthy discussion helps all of us, so you are requested to be polite and soft, even if you disagree with the views of others. The question and its current solution has also been given on this page.



A train of length 74m is running at a speed of 61m/s. How long will it take to cross a tunnel of length 48m?


2 sec.


3 sec.


5 sec.


4 sec.

Ans: a

The total distance to be covered is equal to the length of the train plus the length of the tunnel. By the time and distance formula, we get time = distance/speed, which gives ${74 + 48}/61$ = 2s.

Comments and Discussion