The Fly and The Trains Puzzle
Two trains are 200 km apart, heading towards each other, going at 50 km/hour each.
From one train a fly takes off, flying straight above the rails to the other train at 75 km/hour, bounces off it and flies back to the first train.
This is repeated till the trains crash together and the fly is smashed (Headline: Fly Dies in Freak Train Crash, Rest Survive)
What distance does the fly fly until its tragic end?
Note: there is a complicated and an easy way to solve this one.
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