document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=988424>Question 988424</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( "Having problems figuring out the word problem. \r<BR>\n" );
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document.write( "I have.  d + q = 40\r<BR>\n" );
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document.write( "And\r<BR>\n" );
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document.write( ".1d + .25q = 4.90\r<BR>\n" );
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document.write( "Can you show me how to do it? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #807888 by </B><A HREF=/tutors/aboutme.mpl?userid=MathTherapy><B>MathTherapy(10552)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathTherapy><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=MathTherapy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=807888\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( " 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" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Having problems figuring out the word problem. \r<BR>\n" );
document.write( "\n" );
document.write( "I have.  d + q = 40\r<BR>\n" );
document.write( "\n" );
document.write( "And\r<BR>\n" );
document.write( "\n" );
document.write( ".1d + .25q = 4.90\r<BR>\n" );
document.write( "\n" );
document.write( "Can you show me how to do it?<BR>\n" );
document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">There's no NEED to multiply the 2nd equation by 100 as 1 person suggested. Don't let anyone tell you RUBBISH!<BR>\n" );
document.write( "d + q = 40____d = 40 - q ------ eq(i)<BR>\n" );
document.write( ".1d + .25q = 4.9 ------ eq (ii)<BR>\n" );
document.write( "The EASIEST \"route\" is the one that involves substituting 40 - q for d in eq (ii). <BR>\n" );
document.write( "This gives: .1(40 - q) + .25q = 4.9<BR>\n" );
document.write( "4 - .1q + .25q = 4.9<BR>\n" );
document.write( ".15q = .9<BR>\n" );
document.write( "Number of quarters, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28matrix%281%2C5%2C+q%2C+%22=%22%2C+.9%2F.15%2C+%22=%22%2C+6%29%29 ALIGN=MIDDLE  ALT=\"highlight_green%28matrix%281%2C5%2C+q%2C+%22=%22%2C+.9%2F.15%2C+%22=%22%2C+6%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now, substitute 6 for q in eq (i) to get \"d,\" the number of dimes.<BR>\n" );
document.write( "There's ABSOLUTELY nothing wrong with working with decimals! </SPAN>\n" );
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