document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=522921>Question 522921</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 4 people can paint 3 walls in 36 minutes.\r<BR>\n" );
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document.write( "How many minutes will it take for 5 people to paint 10 walls? Round to the nearest minute.\r<BR>\n" );
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document.write( "Please show me how to arrive at the answer. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #347076 by </B><A HREF=/tutors/aboutme.mpl?userid=oberobic><B>oberobic(2304)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oberobic><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=347076\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Really problems like this are always fraction problems.<BR>\n" );
document.write( "What we try to find is the fractions that are multiplied to do \"1 whole job\".<BR>\n" );
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document.write( "The crew of 4 people can complete 3 walls in 36 minutes.<BR>\n" );
document.write( "The crew can paint 1 wall in 1/3 * 36 = 12 minutes.<BR>\n" );
document.write( "The crew does 1/12 of a wall per minute.<BR>\n" );
document.write( "Each person is 1/4 of the crew, so each person does 1/4*1/12 = 1/48 of a wall per minute.<BR>\n" );
document.write( "So, we know know that one person can do 1/48 of a wall per minute.<BR>\n" );
document.write( "5 people can do 5*1/48 = 5/48 of a wall per minute.<BR>\n" );
document.write( "So, in 48 minutes they can do 48 min * 5/48  wall/min = 5 walls.<BR>\n" );
document.write( "To do 10 walls will take: 2 * 48 min = 96 min.<BR>\n" );
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document.write( "We found that \"1 whole wall\" takes 12 minutes.<BR>\n" );
document.write( "In turn, this means they can do 1/12 of the job per minute.<BR>\n" );
document.write( "1/12 per minute * 12 minutes = 1 wall<BR>\n" );
document.write( "A crew of 5 is 1.25 more than a crew of 4, so they can paint 25% faster per minute.<BR>\n" );
document.write( "(5-4)/4 = 1/4 = .25<BR>\n" );
document.write( "That means they can do 1 1/4 or 1.25 wall per 12 minutes.<BR>\n" );
document.write( "Instead of 12 minutes per wall, they can do 1 wall in 12/1.25 = 9.6 min.<BR>\n" );
document.write( "To do 10 walls will take 10*9.6 = 96 minutes.<BR>\n" );
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