document.write( "Question 315079: Sam can paint a house in 4 hours, John can paint the same house in 6 hours. How long will it take for both of them to paint the house together? \n" ); document.write( "
Algebra.Com's Answer #225368 by Alan3354(69443)\"\" \"About 
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Sam does 1/4 of the house per hour.
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\n" ); document.write( "What part do they do together?
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