document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=101218>Question 101218</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 15 books are being bought. Some cost $8.50 each, the remainder cost $9.50 each. Estimate the least number of books that can be bought at $8.50 each if the total cost must not be more than $135.50.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #73690 by </B><A HREF=/tutors/aboutme.mpl?userid=Nate><B>Nate(3500)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Nate><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=73690\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x = number of cheaper books<BR>\n" );
document.write( "y = number of more expensive books<BR>\n" );
document.write( "x + y = 15 or y = 15 - x<BR>\n" );
document.write( "8.5x + 9.5y =< 135.5<BR>\n" );
document.write( "Plug:<BR>\n" );
document.write( "8.5x + 9.5(15 - x) =< 135.5<BR>\n" );
document.write( "8.5x + 9.5(15 - x) =< 135.5<BR>\n" );
document.write( "8.5x + 142.5 - 9.5x =< 135.5<BR>\n" );
document.write( "-x =< -7<BR>\n" );
document.write( "x >= 7<BR>\n" );
document.write( "Atleast 7 books ... least amount being seven </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );