document.write( "Question 926630: A homeowner estimates that it will take her 9 days to roof her house. A professional roofer estimates that he could roof the house in 4 days. How long will it take if the homeowner helps the roofer? \n" ); document.write( "
Algebra.Com's Answer #562355 by Alan3354(69443)\"\" \"About 
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A homeowner estimates that it will take her 9 days to roof her house. A professional roofer estimates that he could roof the house in 4 days. How long will it take if the homeowner helps the roofer?
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\n" ); document.write( "The owner does 1/9 of the roof per day.
\n" ); document.write( "The roofer does 1/4 of the roof per day.
\n" ); document.write( "Can you do the rest?
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