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Last visited
Dec 09, 2012 12:30 am
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Working together, 7 identical pumps can empty a pool in 6
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Problem Solving (PS)
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Re: Pumps emptying water
Oct 17, 2012
3
Re: Is |2a − 3b| < |a − b| + |a − 2b|? (1) b = 3 (2) a < b
Nov 20, 2012
3
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