SOLUTION: A freight train .5 mile long is traveling at a steady speed of 20 miles per hour. It enters a tunnel two miles long at 1 P.M. At what time does the rear of the train emerge from th
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Question 684620: A freight train .5 mile long is traveling at a steady speed of 20 miles per hour. It enters a tunnel two miles long at 1 P.M. At what time does the rear of the train emerge from the tunnel? Answer by Edwin McCravy(20054) (Show Source):
You can put this solution on YOUR website! A freight train .5 mile long is traveling at a steady speed of 20 miles per hour. It enters a tunnel two miles long at 1 P.M. At what time does the rear of the train emerge from the tunnel?
The front of the train must travel 2 miles through the tunnel plus .5
miles more so the last car can get out of the tunnel. That's 2.5 miles.
TIME = = = .125 hours = .125×60 minutes =
7.5 minutes, or 7 minutes 30 seconds after 1 PM or 1:07:30 PM.
Edwin
