document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=394550>Question 394550</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a class went one a field trip. the cost for adults was $6 and students cost $2. the total cost was $72 and there were 26 people on the trip. how many adults and how many studens? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #279941 by </B><A HREF=/tutors/aboutme.mpl?userid=pie90010><B>pie90010(44)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=pie90010><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=279941\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> system of equations sir.<BR>\n" );
document.write( "let a be number of adults<BR>\n" );
document.write( "let s be number of students<BR>\n" );
document.write( "6a + 2s = 72<BR>\n" );
document.write( " a +  s = 26<BR>\n" );
document.write( "start by multiplying the second equation by -2, so you can cancel the S's<BR>\n" );
document.write( "-2a + -2s = -52<BR>\n" );
document.write( " 6a +  2s =  72<BR>\n" );
document.write( "now just add them up<BR>\n" );
document.write( "4a = 20<BR>\n" );
document.write( "a = 5<BR>\n" );
document.write( "so now you know adults, just plug a into the original equation to get s<BR>\n" );
document.write( "a + s = 26<BR>\n" );
document.write( "5 + s = 26<BR>\n" );
document.write( "s = 21<BR>\n" );
document.write( "your final answer would be<BR>\n" );
document.write( "21 students, 5 adults </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );