document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=831005>Question 831005</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Lisa and Mike are sister and brother. Lisa has twice as many sisters as brothers, and Mike has five times as many sisters as brothers. How many girls and boys are there in this family?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #501080 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=501080\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Lisa and Mike are sister and brother.<BR>\n" );
document.write( "Let g = no. of girls<BR>\n" );
document.write( "Let b = no. of boys<BR>\n" );
document.write( " Lisa has twice as many sisters as brothers,<BR>\n" );
document.write( "2b = g - 1<BR>\n" );
document.write( "g = 2b + 1<BR>\n" );
document.write( ":<BR>\n" );
document.write( " and Mike has five times as many sisters as brothers.<BR>\n" );
document.write( "g = 5(b-1)<BR>\n" );
document.write( "g = 5b - 5<BR>\n" );
document.write( "g = g, therefore<BR>\n" );
document.write( "5b - 5 = 2b + 1<BR>\n" );
document.write( "5b - 2b = 1 + 5<BR>\n" );
document.write( "3b = 6<BR>\n" );
document.write( "b = 6/3<BR>\n" );
document.write( "b = 2 boys<BR>\n" );
document.write( "then<BR>\n" );
document.write( "2(2) + 1 = 5 girls\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
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document.write( "\n" );
document.write( "  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );