Train's Length

I don't understand how you go about finding the answer to this question. Don't you have to know the speed of the train too? A car going 65 mph passes a train from the back to the front in 2 minutes. At the same time another car going 65mph moves from front to back of train in 10 seconds. if the train travels at a constant speed how long is the train?

re: Train's Length

This is not a homework website.

May I suggest:
http://www.homeworkhelp.com/
http://school.discoveryeducation.com...help_home.html