document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=790885>Question 790885</A>: <I><SPAN STYLE=\"word-break: break-all;\"> nine books are to be bought by a student.Some cost $6 each and the remainder cost $6.50 each. if the total amount spent was $56, how many books at each price are bought? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #479389 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=479389\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> nine books are to be bought by a student<BR>\n" );
document.write( "x + y = 9.....1<BR>\n" );
document.write( "Some cost $6 each and the remainder cost $6.50 each. if the total amount spent was $56,<BR>\n" );
document.write( "6x + 6.50y = 56.....2<BR>\n" );
document.write( "....................<BR>\n" );
document.write( "x + y = 9.....1<BR>\n" );
document.write( "6x + 6.50y = 56 ......2<BR>\n" );
document.write( "Multiply (1) by 6.50<BR>\n" );
document.write( "6.50x + 6.50y = 58.50 ...3<BR>\n" );
document.write( "6x + 6.50y = 56.....2<BR>\n" );
document.write( "Subtract (2) from (3)<BR>\n" );
document.write( "0.50x      = 2.50<BR>\n" );
document.write( "    x      = 5<BR>\n" );
document.write( "Substitute x = 5 into (1)<BR>\n" );
document.write( "x + y = 9<BR>\n" );
document.write( "5 + y = 9<BR>\n" );
document.write( "y = 9 - 5<BR>\n" );
document.write( "y = 4.<BR>\n" );
document.write( "5 x $6 books + 4 x $6.50 books<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ":-) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );