document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=104837>Question 104837</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a collection of nickels and dimes the number of dimes is 3 more than twice the number of nickels.  If the value of the collection is $1.80, how many coins are there? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #89240 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=89240\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> n = number of nickels<BR>\n" );
document.write( "d = number of dimes\r<BR>\n" );
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document.write( "value of one nickel is 5 cents, so the value of n nickels is 5n cents<BR>\n" );
document.write( "value of one dime is 10 cents, so the value of d dimes is 10d cents\r<BR>\n" );
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document.write( "The number of dimes (d) is (=) 3 more (+3) than twice the number of nickels (2n), so\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d+=+2n+%2B+3 ALIGN=MIDDLE  ALT=\"d+=+2n+%2B+3\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "The value of the collection, that is the value of the dimes plus the value of the nickels is $1.80 or 180 cents, so\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5n+%2B+10d+=+180 ALIGN=MIDDLE  ALT=\"5n+%2B+10d+=+180\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Substitute the expression for d from the first equation into the second equation:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cartoon%285n+%2B+10%2Ared%28d%29+=+180%2C5n+%2B+10%2Ared%28%282n%2B3%29%29=180%29 ALIGN=MIDDLE  ALT=\"cartoon%285n+%2B+10%2Ared%28d%29+=+180%2C5n+%2B+10%2Ared%28%282n%2B3%29%29=180%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Simplify and solve:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5n+%2B+10%282n%2B3%29=180 ALIGN=MIDDLE  ALT=\"5n+%2B+10%282n%2B3%29=180\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5n%2B20n%2B30=180 ALIGN=MIDDLE  ALT=\"5n%2B20n%2B30=180\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=25n=150 ALIGN=MIDDLE  ALT=\"25n=150\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n=6 ALIGN=MIDDLE  ALT=\"n=6\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=2%286%29%2B3=15 ALIGN=MIDDLE  ALT=\"d=2%286%29%2B3=15\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "So there are <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2Bn=15%2B6=21 ALIGN=MIDDLE  ALT=\"d%2Bn=15%2B6=21\"   DISABLED_style= \"max-width:90%; height:auto;\" > coins.\r<BR>\n" );
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document.write( "Check:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10%2A15=150 ALIGN=MIDDLE  ALT=\"10%2A15=150\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%2A6=30 ALIGN=MIDDLE  ALT=\"5%2A6=30\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=150%2B30=180 ALIGN=MIDDLE  ALT=\"150%2B30=180\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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