Compilation of all things math --- questions obtained via students' consultation, related math sites.
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Sunday, January 29, 2012
P6 Rate
Tap A needs 10 mins to fill up a pail. Tap B needs 20 mins to fill up a pail. How much time would be needed to fill the pail when both taps are on? [Question posed by Bo Zheng of 6D2012]
