SOLUTION: a train one mile long travels at 30 mph. it enters a tunnel one mile long at 4 pm. at what time does the end of the train emerge from the tunnel?

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Question 348763: a train one mile long travels at 30 mph. it enters a tunnel one mile long at 4 pm. at what time does the end of the train emerge from the tunnel?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
30 mi/hr = 1%2F%281%2F30%29 mi/hr
It takes the front of the train 1%2F30 of an hour
to get through the tunnel.
Then the rear of the train takes another 1%2F30
of an hour to get through.
1%2F30+%2B+1%2F30+=+1%2F15 hr
60 min/hr x 1%2F15 hr = 4 min
At 4:04 PM, the train emerges