document.write( "Question 957495: a pool can be filled with a pipe in 12 hours, and it can also be filled in 30 hours with a hose. how long would it take if both were filling the pool?
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Algebra.Com's Answer #585121 by josgarithmetic(39620)\"\" \"About 
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ADD the two rates. The units must be as POOL per HOUR. \n" ); document.write( "
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