document.write( "Question 1128711: Ayuba can hoe a yam plot in 5hours and salihu can hoe it in 4hours. What fraction of the plot can each of them hoe in 1hour if they work together? ... How long will it take them to hoe the whole plot working together?  \n" ); document.write( "
Algebra.Com's Answer #745190 by josmiceli(19441)\"\" \"About 
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Add their rates of working to get
\n" ); document.write( "their rate working together
\n" ); document.write( "Let \"+x+\" = the fraction of the
\n" ); document.write( "plot they hoe working together
\n" ); document.write( "in 1 hr
\n" ); document.write( "\"+1%2F5+%2B+1%2F4+=+x%2F1+\"
\n" ); document.write( "Multiply both sides by \"+20+\"
\n" ); document.write( "\"+4+%2B+5+=+20x+\"
\n" ); document.write( "\"+20x+=+9+\"
\n" ); document.write( "\"+x+=+9%2F20+\"
\n" ); document.write( "They hoe 9/20 of the plot in 1 hr woking together
\n" ); document.write( "-----------------------
\n" ); document.write( "Let \"+t+\" = time in hrs to hoe 1 plot
\n" ); document.write( "working together
\n" ); document.write( "\"+1%2F5+%2B+1%2F4+=+1%2Ft+\"
\n" ); document.write( "Multiply both sides by \"+20t+\"
\n" ); document.write( "\"+4t+%2B+5t+=+20+\"
\n" ); document.write( "\"+9t+=+20+\"
\n" ); document.write( "\"+t+=+20%2F9+\" hrs
\n" ); document.write( "20/9 hrs working together\r
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