document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1074920>Question 1074920</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need some help, I already got the equation but I'm stuck at the multiplying part. Here is the question: A person has only nickels and quarters. They have a total of $3.85 from 29 coins. Find the number of nickels and quarters. Please help me, I already got N+Q=29 and 5N+25Q=3.85, but I don't know what to do after that. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #689588 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=689588\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It should be 5N+25Q=385 ,<BR>\n" );
document.write( "because the 5, the 5N, the 25, and the 25Q represent,amounts in cents, not $.<BR>\n" );
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document.write( "ONE WAY:<BR>\n" );
document.write( "After that you could solve the first equation for N,<BR>\n" );
document.write( "and substitute the expression found into the other equation.<BR>\n" );
document.write( "N=29-Q,<BR>\n" );
document.write( "5(29-Q)+25Q=385<BR>\n" );
document.write( "145-5Q+25Q=385<BR>\n" );
document.write( "145+20Q=385<BR>\n" );
document.write( "20Q=385-145<BR>\n" );
document.write( "20Q=240<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Q=240%2F20 ALIGN=MIDDLE  ALT=\"Q=240%2F20\"   DISABLED_style= \"max-width:90%; height:auto;\" >---><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28Q=12%29 ALIGN=MIDDLE  ALT=\"highlight%28Q=12%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=N=29-12 ALIGN=MIDDLE  ALT=\"N=29-12\"   DISABLED_style= \"max-width:90%; height:auto;\" >---><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28N=17%29 ALIGN=MIDDLE  ALT=\"highlight%28N=17%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > .<BR>\n" );
document.write( " <BR>\n" );
document.write( "That v way of solving a system of 2 linear equations with two variables is called substitution,<BR>\n" );
document.write( "because you solve one equation for one variable,<BR>\n" );
document.write( "and then substitute the expression found for the variable in the other equation. </SPAN>\n" );
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