Posted by: gc4evr
word problem: fly by train - Sun Mar 07 2010 08:35 AM
Two trains are on the same track 125 miles apart traveling toward each other, one at 55 mph and the other at 45 mph. A fly going 85 mph starts at one train, flies to the other train, immediately turns around and flies back to the first train. It continues going back and forth between the trains until they collide. How many miles did the fly travel?