A train travelling at a speed of 75 mph enters a tunnel 3 1/2 miles long. The train is1/4 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?

Problems on Trains

1)	A train travelling at a speed of 75 mph enters a tunnel 3 1/2 miles long. The train is1/4 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

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