document.write( "Question 487205: 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 #332987 by josmiceli(19441) $\"\"$ $\"About$

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Add their rates of working
\n" ); document.write( "Joan's rate is ( 1 garden weeded) / ( 40 min )
\n" ); document.write( "Mother's rate is ( 1 garden weeded ) / ( 60 min )
\n" ); document.write( "Let their rate working together = ( 1 garden weeded ) / ( x min )
\n" ); document.write( " $\"+1%2F40+%2B+1%2F60+=+1%2Fx+\"$
\n" ); document.write( "Multiply both sides by $\"+120x+\"$
\n" ); document.write( " $\"+3x+%2B+2x+=+120+\"$
\n" ); document.write( " $\"+5x+=+120+\"$
\n" ); document.write( " $\"+x+=+24+\"$
\n" ); document.write( "It will take them 24 min working together \n" ); document.write( "

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