Off Topix: Embrace the Unexpected in Every Discussion
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Two trains are on the same track at a distance of 100 km apart, heading towards one another, each at a speed of 50 km/h. A fly starting out at the front of one train, flies towards the other at a speed of 75 km/h. Upon reaching the other train, the fly turns around and continues towards the first train. How many kilometers does the fly travel before getting squashed in the collision of the two trains?
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