document.write( "Question 297269: Tom can do a job in 4 hours, Joy can do the same job in 3 hours, How many hours will it take the two of them to do the job if they work together \n" ); document.write( "

Algebra.Com's Answer #214081 by josmiceli(19441) $\"\"$ $\"About$

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Add their rates of working to get their
\n" ); document.write( "rate working together
\n" ); document.write( "Tom's rate: (1 job)/(4 hrs)
\n" ); document.write( "Joy's rate: (1 job)/(3 hrs)
\n" ); document.write( " $\"1%2F4+%2B+1%2F3+=+1%2Fx\"$
\n" ); document.write( "Multiply both sides by $\"12x\"$
\n" ); document.write( " $\"3x+%2B+4x+=+12\"$
\n" ); document.write( " $\"7x+=+12\"$
\n" ); document.write( " $\"x+=+12%2F7\"$ hrs
\n" ); document.write( " \n" ); document.write( "

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