document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=97153>Question 97153</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The cashier's office at the college has collected $7020 from part-time students for a total of 42 courses.  If each credit hour costs $45, how many 3-hour courses and how many 5-hour courses were paid for? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #70732 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=70732\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The cashier's office at the college has collected $7020 from part-time students for a total of 42 courses. If each credit hour costs $45, how many 3-hour courses and how many 5-hour courses were paid for?<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "Let # of 3-hr. courses be \"x\"; income from these is 3*45*x = 135x dollars<BR>\n" );
document.write( "Let # of 5-hr. courses be \"42-x\" ; income is 5*45(42-x)=9450-225x dollars<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "income + income = 7020 dollars<BR>\n" );
document.write( "135x + 9450-225x = 7020<BR>\n" );
document.write( "-90x = -2430<BR>\n" );
document.write( "x = 27 (# of 3-hr courses)<BR>\n" );
document.write( "42-x = 15 (# of 5-hr courses) <BR>\n" );
document.write( "==============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );