document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=391566>Question 391566</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The total proceeds from a used book store sale were $250. A total of 91 books were sold. The books were priced at $2.50 and 3.00 each. How man more books were sold for $2.50 then were sold for $3.00? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #277799 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=277799\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The total proceeds from a used book store sale were $250.<BR>\n" );
document.write( "A total of 91 books were sold.<BR>\n" );
document.write( "x + y = 91<BR>\n" );
document.write( "------------ <BR>\n" );
document.write( "The books were priced at $2.50 and 3.00 each.<BR>\n" );
document.write( "2.5x + 3y = 250<BR>\n" );
document.write( "----------- <BR>\n" );
document.write( "How many more books were sold for $2.50 then were sold for $3.00?<BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "x = 91-y<BR>\n" );
document.write( "Substitute for \"x\" and solve for \"y\":<BR>\n" );
document.write( "2.5(91-y)+3y = 250<BR>\n" );
document.write( "227.5 +0.5y = 250<BR>\n" );
document.write( "0.5y = 22.5<BR>\n" );
document.write( "y = 45 (# of books sold at $3.00<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x = 46 (# of books sold at $2.50<BR>\n" );
document.write( "================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );