document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=385312>Question 385312</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A book cost $15 if bought online and $22.50 if bought at the store. The bookstore sold 250 books and took in $4995. How many books were bought online and how many were bought in the store? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #272625 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=272625\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A book cost $15 if bought online and $22.50 if bought at the store. The bookstore sold 250 books and took in $4995. How many books were bought online and how many were bought in the store?<BR>\n" );
document.write( "...<BR>\n" );
document.write( "books  DISABLED_event_online=  x numbers<BR>\n" );
document.write( "books from store= y<BR>\n" );
document.write( "x+y=250..........1<BR>\n" );
document.write( "15x+22.50y = 4995...........2<BR>\n" );
document.write( "...<BR>\n" );
document.write( "multiply (1) by -15<BR>\n" );
document.write( "-15x-15y=-3750<BR>\n" );
document.write( "add this to (2)<BR>\n" );
document.write( "15x-15x+22.50y-15y= -3750+4995<BR>\n" );
document.write( "7.5y=1245<BR>\n" );
document.write( "/7.5<BR>\n" );
document.write( "y=1245/7.5 <BR>\n" );
document.write( "y = 166 books from store.<BR>\n" );
document.write( "Balance online. 84 books<BR>\n" );
document.write( "...<BR>\n" );
document.write( "m.ananth@hotmail.ca </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );