document.write( "Question 433612: One pipe can fill a tank in 20 minutes, while
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Algebra.Com's Answer #300582 by robertb(5830)\"\" \"About 
You can put this solution on YOUR website!
\"x%281%2F20+%2B+1%2F30%29+=+1\"
\n" ); document.write( "<==> \"x%281%2F10%29%281%2F2+%2B+1%2F3%29+=+1\"
\n" ); document.write( "<==> \"%28x%2F10%29%285%2F6%29+=+1\"
\n" ); document.write( "<==> x = 12 minutes.
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