top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

A 1/4 mile long train at speed of 76 mph enters a tunnel of 9/2 miles long. How long does it take for train to cross?

0 votes
223 views

A train travelling at a speed of 76 mph enters a tunnel 9/2 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?

posted May 10, 2017 by anonymous

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

0 votes

For a train of length (1/4) mile long to cross a tunnel of (9/2) mile long it has to travel a distance of (9/2) + (1/4) = 4.75 miles ie., length of the tunnel + length of the train.
Therefore to find the time taken for this ===> distance / speed = Time
4.75/76 = 0.0625 hours = 225 seconds

answer May 10, 2017 by Tejas Naik



Similar Puzzles
0 votes

A 400 yard long train, travelling at 30 mph, enters a one mile long tunnel.

How many seconds will elapse between the moment the front of the train enters the tunnel and the moment the end of the train clears the tunnel?

0 votes

A 500 yard long train, travelling at 90 mph, enters a tunnel of four and a half miles in length.

How long will elapse between the moment the front of the train enters the tunnel and the moment the end of the train clears the tunnel?

+1 vote

A 440 yard long train, travelling at 60 mph, enters a one mile long tunnel.
How long will elapse between the moment the front of the train enters the tunnel and the moment the end of the train clears the tunnel?

+2 votes

A mile long train is moving at sixty miles an hour when it reaches a mile long tunnel. How long does it take the entire train to pass through the tunnel?

0 votes

A train travelling at a speed of 80 kmph enters a tunnel that is 0.5 km long.
The length of the train is 0.25 km.
How long does it take for all of the train to pass through the tunnel, from the moment the front enters, to the moment the rear emerges?

...