document.write( "Question 365424: Martha can rake the leaves in her yard in 4 hours. Her younger brother can do the job in 6 hours. How long will it take them to do the job if they work together? \n" ); document.write( "
Algebra.Com's Answer #260497 by mananth(16946)\"\" \"About 
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Martha can rake the leaves in her yard in 4 hours.
\n" ); document.write( "So she does 1/4 of the job in 1 hour
\n" ); document.write( " Her younger brother can do the job in 6 hours.
\n" ); document.write( "so he can do 1/6 of the job in 1 hour
\n" ); document.write( "Together they will do 1/6 +1/4 of the job in 1 hour
\n" ); document.write( "= (2+3)/12
\n" ); document.write( "=5/12
\n" ); document.write( "They do 5/12 of the job in 1 hour
\n" ); document.write( "so they will do the job yogether in 12/5 hours
\n" ); document.write( "=2.4 hours
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\n" ); document.write( "m.ananth@hotmail.ca
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