document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=118882>Question 118882</A>: <I><SPAN STYLE=\"word-break: break-all;\"> in my purse i have 15 coins-quaters,dime, and pennies. i have twice as many quaters as dimes. the total amounts of money is $1.29. how many of each coin do i have?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #87111 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=87111\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You have q quarters, d dimes, and p pennies.  Each quarter is worth 25 cents, so the value of your quarters is 25q.  Likewise the value of your dimes is 10d and the value of your pennies is p.\r<BR>\n" );
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document.write( "We know that:\r<BR>\n" );
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document.write( "1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=q%2Bd%2Bp=15 ALIGN=MIDDLE  ALT=\"q%2Bd%2Bp=15\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=25q%2B10d%2Bp=129 ALIGN=MIDDLE  ALT=\"25q%2B10d%2Bp=129\"   DISABLED_style= \"max-width:90%; height:auto;\" >  ($1.29 is 129 cents)\r<BR>\n" );
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document.write( "3) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=q=2d ALIGN=MIDDLE  ALT=\"q=2d\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The first thing we can do is substitute 2d for q in each of equations 1 and 2.\r<BR>\n" );
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document.write( "4) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2d%2Bd%2Bp=15 ALIGN=MIDDLE  ALT=\"2d%2Bd%2Bp=15\"   DISABLED_style= \"max-width:90%; height:auto;\" > => <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3d%2Bp=15 ALIGN=MIDDLE  ALT=\"3d%2Bp=15\"   DISABLED_style= \"max-width:90%; height:auto;\" > and\r<BR>\n" );
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document.write( "5) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=50d%2B10d%2Bp=129 ALIGN=MIDDLE  ALT=\"50d%2B10d%2Bp=129\"   DISABLED_style= \"max-width:90%; height:auto;\" > => <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=60d%2Bp=129 ALIGN=MIDDLE  ALT=\"60d%2Bp=129\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Now, solve equation 4) for p\r<BR>\n" );
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document.write( "6) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p=15-3d ALIGN=MIDDLE  ALT=\"p=15-3d\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "And substitute this value for p into equation 5)\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=60d%2B%2815-3d%29=129 ALIGN=MIDDLE  ALT=\"60d%2B%2815-3d%29=129\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Combine terms and solve for d\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=57d=129-15=114 ALIGN=MIDDLE  ALT=\"57d=129-15=114\"   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=114%2F57=2 ALIGN=MIDDLE  ALT=\"d=114%2F57=2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Now we know we have 2 dimes.  That means we have <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2A2=4 ALIGN=MIDDLE  ALT=\"2%2A2=4\"   DISABLED_style= \"max-width:90%; height:auto;\" > quarters.  2 dimes plus 4 quarters is 6 coins.  15 coins minus 6 coins is 9 coins, so we have 9 pennies.\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=25%2A4%2B10%2A2%2B9=100%2B20%2B9=129 ALIGN=MIDDLE  ALT=\"25%2A4%2B10%2A2%2B9=100%2B20%2B9=129\"   DISABLED_style= \"max-width:90%; height:auto;\" > Answer checks\r<BR>\n" );
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document.write( "Hope you aren't hungry for a Big Mac. </SPAN>\n" );
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