Two trains start at opposite ends of a 100-mile track and travel toward each other. Train A moves at 40 mph, and Train B moves at 60 mph. At the exact moment the trains start, a super-fast bee sitting on Train A's front bumper flies toward Train B at 80 mph. When it hits Train B, it instantly turns around and flies back to Train A, repeating this motion until the trains crash. What total distance does the bee fly?
80 miles
The trains travel toward each other at a combined speed of 100 mph (40 + 60) over a 100-mile distance, meaning they will crash in exactly 1 hour. Since the bee flies continuously for that entire hour at 80 mph, it travels a total distance of 80 miles.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Hard. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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