Train Passes the Tunnel

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?




Similar Riddles

Three people enter a room and have a green or blue hat placed on their heads. They cannot see their own hat but can see the other hats.
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They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.
If at least one of them guesses correctly they win $10,000 each, but if anyone guesses incorrectly they all get nothing.
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Can you divide the below-given shape into four equal and identical pieces?

Divide in Equal Shape

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Things are just as they seem, right? Well, check again.
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Amazing Facts

No Solution

In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki