document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=164155>Question 164155</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jeb has 15 coins. They are all quarters and dimes. He has a total of $2.10. How many dimes 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 #120973 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=120973\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Jeb has 15 coins. They are all quarters and dimes. He has a total of $2.10. How many dimes does he have?<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "D = # of dimes<BR>\n" );
document.write( "Q = # of quarters<BR>\n" );
document.write( "D+Q = 15<BR>\n" );
document.write( "10D + 25Q = 210<BR>\n" );
document.write( "Q = 15-D  (from the 1st eqn)<BR>\n" );
document.write( "Sub into the 2nd eqn<BR>\n" );
document.write( "10D + 25*(15-D) = 210<BR>\n" );
document.write( "10D + 375 - 25D = 210<BR>\n" );
document.write( "-15D = -165<BR>\n" );
document.write( "D = 11<BR>\n" );
document.write( "To check:<BR>\n" );
document.write( "Q = 15-D = 4<BR>\n" );
document.write( "4*25 + 11*10 is 210, so it's correct. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );