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

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Question

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?

A

2 sec.

B

3 sec.

C

5 sec.

D

4 sec.

Soln.
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.


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