Personal Comment: I love this simple logical problem!

The Time & Tide Enigma!

What we know: A ship is at anchor. Over the side hangs a rope ladder with rungs a foot apart. The tide rises at a rate of 8 inches per hour.

Enigma: At the end of six hours, how much of the rope ladder will remain above water, assuming that 8 feet were above the water when the tide began to rise?


Solution: Since the ship is afloat, the water level in relation to the ship stays the same. Therefore, 8 feet are above water, just as the beginning!

See who got this right


Previous Enigma | Enigma Index | Next Enigma




This window to the Fourth Dimension is hosted by GeoCities