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Brain Teasers for Adults
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The Two Trains Problem

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Two trains are 100 miles apart heading toward each other at 50 mph each. A fly starts at one train and flies back and forth at 75 mph until crushed. How far does the fly travel?
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Quick Answer & Explanation
75 miles. The trains

The answer to this riddle is 75 miles. The trains. Difficulty: Hard · Solved by 22,048 puzzle lovers.

75 miles. The trains meet in 1 hour (100 miles / 100 mph combined), and the fly travels 75 mph for 1 hour.
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