Discussion of Question with ID = 057 under Problems-on-Trains

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Question

A train of length 107m is running at a speed of 38m/s. How long will it take to cross a tunnel of length 45m?

A

4 sec.

B

5 sec.

C

3 sec.

D

6 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 ${107 + 45}/38$ = 4s.

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