document.write( "Question 347863: please answer sir,ma'am\"mark contracted 15 skilled workers to finish cementing a certain walk of uniform width in 16 days.after 8 days of work,6 of them got sick and were not replaced until 4 days after.he wants the job to be on time .how many should he hire?\"\r
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Algebra.Com's Answer #248716 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Originally, the job required $\"15%2A16=240\"$ worker-days to complete.
\n" ); document.write( "They put in $\"15%2A8=120\"$ worker-days in 8 days.
\n" ); document.write( "The reduced crew of $\"11\"$ put in $\"11%2A4=44\"$ worker-days in 4 days.
\n" ); document.write( "Look at the worker-days remaining.
\n" ); document.write( " $\"W%2AD%2B44%2B120=240\"$
\n" ); document.write( " $\"W%2AD%2B164=240\"$
\n" ); document.write( " $\"W%2AD=76\"$
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\n" ); document.write( "76 worker-days of output are required to finish the job.
\n" ); document.write( "He has used up $\"8%2B4=12\"$ days aleready and he has 4 days if he wants to stick to the 16 day schedule.
\n" ); document.write( " $\"W%2A4=76\"$
\n" ); document.write( " $\"W=19\"$
\n" ); document.write( "He needs to have $\"19\"$ workers to make his schedule.
\n" ); document.write( "Since he's already hired $\"11\"$ workers, he should hire an additional $\"highlight%288%29\"$ workers. \n" ); document.write( "

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