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OpenStudy (anonymous):
what math concept is this? Ky Yack takes 50 minutes to paddle 4500 meters upstream. Ky takes only 12.5 minutes to return 4500 meters downstream. Assuming that Ky always paddles at a constant speed, how long will it take him to paddle 5625 meters across a lake where there is no current?
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OpenStudy (anonymous):
what do you have to learn to be able to solve this probleM?
OpenStudy (unklerhaukus):
it is quicker to go directly with and then against the current, than to cross the current
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