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January 28, 2015

January 28, 2015

Posted by **Mary** on Thursday, November 27, 2008 at 5:59am.

- Math -
**drwls**, Thursday, November 27, 2008 at 6:22am(1/30 h)* 30 mi/h = distance travelled in 2 minutes = 1 mile

When going through a tunnel 9 times as long as the train, the trail travels 10 train lengths. (Additional time is needed to get its entire length past the exit).

Therefore the train is 1/10 mile long

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