Lessons

General Aptitude
1.1 Problems on Trains - General Questions

16 / 31

Q.

A train travelling at a speed of 75 mph enters a tunnel 31/2 miles long. The train is 1/4 mile long. How long does it take for the train to pass through the tunnel from the moment the front enters to the moment the rear emerges?

View Answer

Correct choice: B

Explanation:

Total distance covered
= ( 7 + 1 ( miles
2 4
 
= 15 miles.
4
Therefore Time taken
= ( 15 ( hrs
4 x 75
 
= 1 hrs
20
 
= ( 1 x 60 ( min.
20
  = 3 min.
16 / 31