document.write( "Question 1119779: Housecleaning: Sally can clean the house in 6 hours, and her father can clean the house in 4 hours. Sally's younger brother, Dennis, can completely mess up the house in 8 hours. If Sally and her father clean and Dennis plays, how long will it take to clean the house? \n" ); document.write( "
Algebra.Com's Answer #735398 by Shin123(626)\"\" \"About 
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Sally can finish \"1%2F6\" of the job in a hour,her dad can finish \"1%2F4\" of the job in a hour, and Dennis can finish \"-%281%2F8%29\" of the job in a hour. \"1%2F6%2B1%2F4-1%2F8=4%2F24%2B6%2F24-3%2F24=7%2F24\"\r
\n" ); document.write( "\n" ); document.write( "\"1%2F%287%2F24%29=24%2F7\" It will take them \"3%263%2F7\" hours to finish the job,if they can get Dennis to stop playing when they are finished.
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