document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=143126>Question 143126</A>: <I><SPAN STYLE=\"word-break: break-all;\"> On the first day of school, the percentage of boys in a particular class is 60%.  During the school year, six girls move away, and are replaced in the class by six boys; this makes the class roster 75% boys.  Find the number of boys and girls in the class on the first day of school.   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #108322 by </B><A HREF=/tutors/aboutme.mpl?userid=mangopeeler07><B>mangopeeler07(462)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mangopeeler07><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=108322\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> first day of school boys=60%<BR>\n" );
document.write( "midyear boys=75%\r<BR>\n" );
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document.write( "75-60=15\r<BR>\n" );
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document.write( "15% change from 6 boys, so <BR>\n" );
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document.write( "Cross multiply and get <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=600=15x ALIGN=MIDDLE  ALT=\"600=15x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Divide and get <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40=x ALIGN=MIDDLE  ALT=\"40=x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "So there are 40 people in the class.\r<BR>\n" );
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document.write( "Now find 60% of 40, or 40(.6) and get 24.  This is the number of boys.  Subtract that from 40 and get 16. This is the number of girls.\r<BR>\n" );
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document.write( "Therefore, at the beginning of the school year, there were 24 boys and 16 girls. </SPAN>\n" );
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