document.write( "Question 334606: a painting job can be completed by 7 painters in 17 days. if 21 more painters joined the team 9 days after starting work on the job, then how many more days are required to complete the job? \n" ); document.write( "

Algebra.Com's Answer #239858 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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a painting job can be completed by 7 painters in 17 days.
\n" ); document.write( " if 21 more painters joined the team 9 days after starting work on the job,
\n" ); document.write( " then how many more days are required to complete the job?
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\n" ); document.write( "Find out how many man-days to complete the job
\n" ); document.write( "7 * 17 = 119 man-days
\n" ); document.write( ":
\n" ); document.write( "Let d = no. of days to finish the job
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\n" ); document.write( "there will be 28 total painters after the 1st 9 days
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\n" ); document.write( "(7*9) + (28d) = 119
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\n" ); document.write( "63 + 28d = 119
\n" ); document.write( ":
\n" ); document.write( "28d = 119 - 63
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\n" ); document.write( "28d = 56
\n" ); document.write( "d = $\"56%2F28\"$
\n" ); document.write( "d = 2 days to finish the job
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\n" ); document.write( "Check solution
\n" ); document.write( "(7*9) + (28*2) =
\n" ); document.write( "63 + 56 = 119
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