document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=561125>Question 561125</A>: <I><SPAN STYLE=\"word-break: break-all;\"> There are boys and girls in a class. If the number of girls is multiplied by two and added to the number of boys in the class, the sum is 30. If the number of girls is multiplied by two and the number of boys in the class is subtracted from it, the result is 6. How many boys are in the class? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #364169 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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/cgi-bin/show-face.mpl?user=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=364169\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> boys --------x<BR>\n" );
document.write( "girls-------------y\r<BR>\n" );
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document.write( "2y+x=30<BR>\n" );
document.write( "2y-x=6\r<BR>\n" );
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document.write( "add the two equations\r<BR>\n" );
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document.write( "4y=36<BR>\n" );
document.write( "/4<BR>\n" );
document.write( "y=9----------girls\r<BR>\n" );
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document.write( "plug x in first equation\r<BR>\n" );
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document.write( "2y+x=30<BR>\n" );
document.write( "18+x=30<BR>\n" );
document.write( "x=30-18<BR>\n" );
document.write( "x=12--- boys<BR>\n" );
document.write( " </SPAN>\n" );
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