document.write( "Question 899859: Barry can do a certain job in 9 hours, whereas it takes Samuel 11 hours to do the same job. How long would it take them to do the job working together? \n" ); document.write( "
Algebra.Com's Answer #545633 by Alan3354(69443)\"\" \"About 
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Barry does 1/9 per hour.
\n" ); document.write( "Samuel does 1/11 per hour.
\n" ); document.write( "Together they do 1/9 + 1/11 per hour.
\n" ); document.write( "Add to get the job/hr
\n" ); document.write( "Invert to get hours/job
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