document.write( "Question 710713: Y men can do a job in 20 days. They work for 8 days and rest for 4 days. For them to complete the same job they need 16 more men. What is the initial number of men, \n" ); document.write( "
Algebra.Com's Answer #437187 by ankor@dixie-net.com(22740)\"\" \"About 
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Y men can do a job in 20 days.
\n" ); document.write( "therefore
\n" ); document.write( "20y man-days required to do the job
\n" ); document.write( ":
\n" ); document.write( " They work for 8 days and rest for 4 days. For them to complete the same job they need 16 more men.
\n" ); document.write( " What is the initial number of men,
\n" ); document.write( ":
\n" ); document.write( "Assume they mean they want to finish in 20 days. The additional 16 men will work for 8 days, plus the the original group works for 8 more days.
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\n" ); document.write( "8y + 8(y+16) = 20y
\n" ); document.write( "8y + 8y + 128 = 20y
\n" ); document.write( "16y + 128 = 20y
\n" ); document.write( "128 = 20y - 16y
\n" ); document.write( "128 = 4y
\n" ); document.write( "y = 128/4
\n" ); document.write( "y = 32 men initially
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