document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=488269>Question 488269</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 8. A university bookstore recently sold a wirebound graph-paper notebook for $2.55, and a college-ruled notebook for $3.22. At the start of spring semester, a combination of 50 of these notebooks were sold for a total of $157.65. How many of each type were sold?\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "thanks for any help!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #333330 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=333330\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 8. A university bookstore recently sold a wirebound graph-paper notebook for $2.55, and a college-ruled notebook for $3.22. At the start of spring semester, a combination of 50 of these notebooks were sold for a total of $157.65. How many of each type were sold?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let x = number of graph-paper notebooks sold<BR>\n" );
document.write( "then<BR>\n" );
document.write( "50-x = number of college-ruled notebooks sold<BR>\n" );
document.write( ".<BR>\n" );
document.write( "2.55x + 3.22(50-x) = 157.65<BR>\n" );
document.write( "2.55x + 161-3.22x = 157.65<BR>\n" );
document.write( "161-0.67x = 157.65<BR>\n" );
document.write( "-0.67x = -3.35<BR>\n" );
document.write( "x = 5 (graph-paper notebooks)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "college-ruled notebooks:<BR>\n" );
document.write( "50-x = 50-5 = 45<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );