SOLUTION: a swimming pool can be filling in 11 hours if a water enters through a pipe alone, or in 21 hours if water enters through a hose alone. If water enter through both the pipe and the
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Question 609673: a swimming pool can be filling in 11 hours if a water enters through a pipe alone, or in 21 hours if water enters through a hose alone. If water enter through both the pipe and the hose, how long will it take to fill the pool? Answer by flame8855(424) (Show Source):
