document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=900343>Question 900343</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 51 coins. Some are 10$ coins and the rest are 20$ coins. The total of all the coins is 750$. How many of each does he have </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #545908 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=545908\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+y=51,<BR>\n" );
document.write( "10*x+20*y=750<BR>\n" );
document.write( "x=51-y<BR>\n" );
document.write( "10*(51-y)+20*y=750<BR>\n" );
document.write( "510-10y+20*y=750<BR>\n" );
document.write( "10*y=240<BR>\n" );
document.write( "y=24<BR>\n" );
document.write( "x=51-y<BR>\n" );
document.write( "x=27 y=24<BR>\n" );
document.write( "check<BR>\n" );
document.write( "27+24=51<BR>\n" );
document.write( "10*x+20*y=750<BR>\n" );
document.write( "10*27+20*24=750<BR>\n" );
document.write( "270+480=750<BR>\n" );
document.write( "750=750<BR>\n" );
document.write( "ok<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );