document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=977689>Question 977689</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Problem:  There are some boys and dogs at a place. If total number of heads is 7 and total number of legs is 20, how many boys and how many dogs are there?\r<BR>\n" );
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document.write( "please solve this question.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #599244 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=599244\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> b+d=7<BR>\n" );
document.write( "4d+2b=20<BR>\n" );
document.write( "b=7-d<BR>\n" );
document.write( "4d+2(7-d)=20<BR>\n" );
document.write( "4d+14-2d=20<BR>\n" );
document.write( "2d=6<BR>\n" );
document.write( "d=3<BR>\n" );
document.write( "b=4<BR>\n" );
document.write( "check<BR>\n" );
document.write( "4*2+3*4=20<BR>\n" );
document.write( "8+12=20<BR>\n" );
document.write( "ok\r<BR>\n" );
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