document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=122202>Question 122202</A>: <I><SPAN STYLE=\"word-break: break-all;\"> All purple aliens have four legs and all green aliens have 7 legs.There are a total of 436 legs and 97 heads. How many aliens of each color are there? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #89697 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=89697\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> All purple aliens have four legs and all green aliens have 7 legs.There are a total of 436 legs and 97 heads. How many aliens of each color are there?<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "Legs Equation: 4p + 7g = 436<BR>\n" );
document.write( "Heads Equation : p + g = 97<BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "p = 97-g<BR>\n" );
document.write( "Substitute to solve for g:<BR>\n" );
document.write( "4(97-g)+7g = 436<BR>\n" );
document.write( "388-4g+7g = 436<BR>\n" );
document.write( "3g = 54<BR>\n" );
document.write( "g = 18 (# of green aliens)<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Substitute into p = 97-g to solve for \"p\":<BR>\n" );
document.write( "p = 97-18 = 79 (# of puple aliens)<BR>\n" );
document.write( "==========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );