document.write( "Question 380382: * Sammy can complete a programming job in 8 hours if he works alone.
\n" ); document.write( " * Marilyn can complete the same programming job in 12 hours if she works alone.\r
\n" ); document.write( "\n" ); document.write( "If Sammy and Marilyn work together, how many hours and minutes will they complete the job?
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Algebra.Com's Answer #270075 by mananth(16949)\"\" \"About 
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Sammy can complete a programming job in 8 hours if he works alone.
\n" ); document.write( "So he does 1/8 of the job in 1 hour
\n" ); document.write( "..
\n" ); document.write( "Marilyn can complete the same programming job in 12 hours if she works alone
\n" ); document.write( "Marilyn can do 1/12 of the job in 1 hour.
\n" ); document.write( "...
\n" ); document.write( "Together they can do 1/8 +1/2 of the job in 1 hour
\n" ); document.write( "=(3+2)/24
\n" ); document.write( "=5/24 of the job in 1 hour
\n" ); document.write( "..
\n" ); document.write( "so they will take 24/5 hours to do the job
\n" ); document.write( "=4.8 hours
\n" ); document.write( "=4hours +0.8*60minutes
\n" ); document.write( "=4hours +48 minutes
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\n" ); document.write( "m.ananth@hotmail.ca
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