document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=392905>Question 392905</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Tom has 12 coins in quarters and knickels. Their value is $2.20. How many coins of each type 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 #278919 by </B><A HREF=/tutors/aboutme.mpl?userid=unlockmath><B>unlockmath(1688)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=unlockmath><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=unlockmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=278919\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hello, <BR>\n" );
document.write( "Let's have x be the number of nickels so we can write the following equation:<BR>\n" );
document.write( ".05x+.25(12-x)=2.20<BR>\n" );
document.write( "Expand this out and multiply by 100 to get:<BR>\n" );
document.write( "5x+300-25x=220<BR>\n" );
document.write( "Combine like terms and subtract 300:<BR>\n" );
document.write( "-20x=-80<BR>\n" );
document.write( "Divide each side by -20 to get:<BR>\n" );
document.write( "x=4 <BR>\n" );
document.write( "So we have 4 nickels and 8 quarters. Work it out to see if it does come to $2.20<BR>\n" );
document.write( "Got it?<BR>\n" );
document.write( "RJ<BR>\n" );
document.write( "www.math-unlock.com </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );