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226: Train Trouble
Herman and Sheila were on one of their Saturday adventures, this time walking along a railroad track. They came to a tunnel and decided to walk through, even though they knew they shouldn’t.
After they had walked 2/5 of the way through the tunnel, they heard a train whistle blow in the distance, but couldn’t tell from which direction the train was approaching. In their fright they began running in opposite directions. They both ran at a constant speed of 15 miles an hour. Each child barely got out of the tunnel in the nick of time. How fast was the train moving?
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