document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=965341>Question 965341</A>: <I><SPAN STYLE=\"word-break: break-all;\"> On Friday, a local hamburger shop sold a combined total of <BR>\n" );
document.write( "328<BR>\n" );
document.write( " hamburgers and cheeseburgers. The number of cheeseburgers sold was three times the number of hamburgers sold. How many hamburgers were sold on Friday? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #590062 by </B><A HREF=/tutors/aboutme.mpl?userid=rm29924><B>rm29924(97)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rm29924><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=rm29924><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=590062\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let X = the number of hamburgers sold<BR>\n" );
document.write( "let Y = the number of cheeseburgers sold<BR>\n" );
document.write( "a combined total of 328 were sold<BR>\n" );
document.write( "so: X + Y = 328<BR>\n" );
document.write( "cheeseburgers = 3 times the number of  hamburgers sold<BR>\n" );
document.write( "so: Y = 3X<BR>\n" );
document.write( "substitute 3X into the equation for Y<BR>\n" );
document.write( "X + 3X = 328<BR>\n" );
document.write( "4X = 328<BR>\n" );
document.write( "divide both sides by 4 to get the variable X by itself<BR>\n" );
document.write( "X = 82<BR>\n" );
document.write( "so: 82 hamburgers were sold Friday  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );