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Mathematics 9 Online
OpenStudy (anonymous):

A 10 foot rope ladder hangs over the side of a boat with the bottom rung on the surface of the water. The rungs are one foot apart, and the tide goes up at the rate of 6 inches per hour. How long will it be until three rungs are covered?

OpenStudy (lstrasmann):

6 hours

OpenStudy (anonymous):

Never. The boat rises as the tide goes up.

OpenStudy (lstrasmann):

... was that a brain teaser or something?

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