A train traveling at a speed of 80 mph enters a tunnel that is 0.5 miles long. T

游客2024-08-17  11

问题 A train traveling at a speed of 80 mph enters a tunnel that is 0.5 miles long. The length of the train is 0.25 miles. 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?

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答案 One minute

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