document.write( "Question 454110: dana could pain the fence in 60 minutes. Fran can paint the fence in 40 minutes.How long would it take if the worked together? \n" ); document.write( "

Algebra.Com's Answer #311889 by josmiceli(19441) $\"\"$ $\"About$

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Add their rates of working
\n" ); document.write( "Dana's rate:
\n" ); document.write( "( 1 fence) / ( 60 min )
\n" ); document.write( "Fran's rate:
\n" ); document.write( "( 1 fence) / ( 40 min )
\n" ); document.write( " $\"+1%2F60+%2B+1%2F40+=+1%2Fx+\"$
\n" ); document.write( "Multiply both sides by $\"+120x\"$
\n" ); document.write( " $\"+2x+%2B+3x+=+120+\"$
\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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