document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1011651>Question 1011651</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Rachel’s piggy bank consists of P10 and P5 coins only. If there are 75 coins worth P450, how many coins of each kind does she have? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #627379 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=627379\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi there,<BR>\n" );
document.write( "Make P5 coins = x<BR>\n" );
document.write( "Make P10 coins = y<BR>\n" );
document.write( "x + y = 75.......(1)<BR>\n" );
document.write( "5x + 10y = 450....(2)<BR>\n" );
document.write( "Multiply (1) by 10<BR>\n" );
document.write( "10x + 10y = 750....(1)<BR>\n" );
document.write( "5x + 10y = 450.....(2)<BR>\n" );
document.write( "Subtract (2) from (1)<BR>\n" );
document.write( "5x .....= 300<BR>\n" );
document.write( "x.......= 60<BR>\n" );
document.write( "Substitute x = 60 into (1)<BR>\n" );
document.write( "x + y = 75.......(1)<BR>\n" );
document.write( "60 + y = 75<BR>\n" );
document.write( "y = 75 - 60<BR>\n" );
document.write( "y = 15<BR>\n" );
document.write( "You have 60 x P5 coins<BR>\n" );
document.write( "and 15 x P10 coins.<BR>\n" );
document.write( "Hope this helps :-) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );