document.write( "Question 478839: sally can paint a room in 4 hours while it takes steve 7 hours to paint the same room. how long would it take them to paint the room if they worked together?
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Algebra.Com's Answer #328093 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
This is a parallel input problem, commonly seen in pumps and flow rates and electrical resistances.
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\n" ); document.write( "Hint: Consider what part of a room Sally paints per hour, and what part Steve does per hour.
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