SOLUTION: A 1 mile long train is moving at 30 mph when it reaches a 1 mile long tunnel. How many minutes does it take the entire train to pass through the tunnel?

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Question 709228: A 1 mile long train is moving at 30 mph when it reaches a 1 mile long tunnel. How many minutes does it take the entire train to pass through the tunnel?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
The front of the train has to travel 1 mile to get through the tunnel
then the end of the train has to travel 1 mile.
That's 2 miles of travel to go through.
+2+=+30t+
+t+=+2%2F30+
+t+=+1%2F15+ hrs
+%281%2F15%29%2A60+=+4+ min
It takes the train 4 minutes to get through the tunnel