document.write( "Question 380382: * Sammy can complete a programming job in 8 hours if he works alone.
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document.write( " * Marilyn can complete the same programming job in 12 hours if she works alone.\r
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document.write( "If Sammy and Marilyn work together, how many hours and minutes will they complete the job? \n" );
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Algebra.Com's Answer #270075 by mananth(16949) You can put this solution on YOUR website! 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 \n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " |