document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=225980>Question 225980</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A jar contains 40 coins consisting of dimes and quarters and having a total value of $4.90. How many of each kind of coin are there?\r<BR>\n" );
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document.write( "I know that somehow I use .1d+.25q=$4.90 but I don't know how to add the 40 in there. Help please! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #168427 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=168427\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let d=number of dimes, q=number of quarters<BR>\n" );
document.write( "d+q=40<BR>\n" );
document.write( "q=40-d<BR>\n" );
document.write( ".1d+.25q=4.9 good work.<BR>\n" );
document.write( ".1d+.25(40-d)=4.9<BR>\n" );
document.write( ".1d+10-.25d=4.9<BR>\n" );
document.write( "-.15d=-5.1<BR>\n" );
document.write( "d=34<BR>\n" );
document.write( "q=6<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );