document.write( "Question 976149: A group of 3 workers need 20 days to do a certain job. How long would it take a group of 4 workers to do the same job, if each worker performs at the same rate? \n" ); document.write( "
Algebra.Com's Answer #597805 by josgarithmetic(39616)\"\" \"About 
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This is familiar. Check my solutions from up to yesterday and you might find the same question already answered.\r
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\n" ); document.write( "\n" ); document.write( "r, rate for one worker;
\n" ); document.write( "t, unknown number of days for four workers;\r
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\n" ); document.write( "\n" ); document.write( "RT=J, basic uniform rates equation for doing a task, piece of work, job. One job is shown in
\n" ); document.write( "your example as \"1\".\r
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\n" ); document.write( "\n" ); document.write( "\"system%283r%2A20=1%2C4r%2At=1%29\"
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