document.write( "Question 1166268: Michael and Noel work together. They can paint the roof of a house in 7 days. If Michael alone can do the job in 4 days faster than Noel, how long will it take Noel to do the same job alone? \n" ); document.write( "
Algebra.Com's Answer #790759 by josgarithmetic(39623)\"\" \"About 
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Michael's rate, \"1%2F%28n-4%29\"\r
\n" ); document.write( "\n" ); document.write( "Noel's rate, \"1%2Fn\"\r
\n" ); document.write( "\n" ); document.write( "Combined, working together, \"1%2F%28n-4%29%2B1%2Fn=1%2F7\"
\n" ); document.write( "Solve for n.
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