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-----Tank filling question
March 8, 2012
Q. A tank is 3/4 filled and there are pipes one can empty the tank in 12 min and the other can fill it in 8 min and both the pipes are open at a time. Whether the tank will become full or empty, and much time will be taken.
Khalid K.- Zhob, Pakistan
Full in 6 minutes, Khalid.
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March 9, 2012
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