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?

[A].	2.5 min
[B].	3 min
[C].	3.2 min
[D].	3.5 min

Answer: Option B

Explanation:

Total distance covered

=		7	+	1		miles
		2		4

=	15	miles.
	4

Time taken

=		15		hrs
		4 x 75

=	1	hrs
	20

=		1	x 60		min.
		20

= 3 min.

Aptitude :: Problems on Trains : More Exercises

Problems on Trains - General Questions

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?

Aptitude :: Problems on Trains : More Exercises

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