document.write( "Question 485480: Joan can weed the garden in 40 min and her mother can weed it in 60 min. How long would it take them working together? \n" ); document.write( "
Algebra.Com's Answer #332020 by deborabr(181)\"\" \"About 
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mmc(40,60)
\n" ); document.write( "40,60|2
\n" ); document.write( "20,30|2
\n" ); document.write( "10,15|2
\n" ); document.write( " 5,15|3
\n" ); document.write( " 5, 5|5
\n" ); document.write( " 1, 1\r
\n" ); document.write( "\n" ); document.write( "mmc(40,60)=2*2*2*3*5
\n" ); document.write( "mmc(40,60)=120
\n" ); document.write( "they will work together after 120min or 2 hours
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