document.write( "Question 163803: one pipe fills a tank in 50 minutes another pipe in 75 how long does it take for both pipes together to fill a tanks? \r
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Algebra.Com's Answer #120666 by edjones(8007)\"\" \"About 
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One pipe does 1/50 of the job in 1 minute.
\n" ); document.write( "the other pipe doe 1/75 in 1 minute
\n" ); document.write( "1/50 + 1/75
\n" ); document.write( "=3/150 + 2/150 = 5/150 = 1/30 of the job in 1 minute.
\n" ); document.write( "So the tank will be filled in 30 minutes using both pipes.
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