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Question
A train travelling at a speed of 75 mph enters a tunnel 3 1/2 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?
Options:
A .  2.5 min
B .  3 min
C .  3.2 min
D .  3.5 min
Answer: Option B

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