document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=30712>Question 30712</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me put this into an equation. A man has $.70 in dimes and nickels. He has 8 coins together. How many nickels does he have? I know the answer is 2 by trial and error but I don't know the equation. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #17425 by </B><A HREF=/tutors/aboutme.mpl?userid=Paul><B>Paul(988)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Paul><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=17425\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let the dimes be x<BR>\n" );
document.write( "Let the nickels be y<BR>\n" );
document.write( "x+y=8<BR>\n" );
document.write( "y=8-x (subsitution)<BR>\n" );
document.write( "DDime value x 100 = 10<BR>\n" );
document.write( "Nickel value x 100 = 5<BR>\n" );
document.write( "TOtal value x 100 = 70\r<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "10x+5y=70<BR>\n" );
document.write( "10x+5(8-x)=70<BR>\n" );
document.write( "10x-5x=70-40<BR>\n" );
document.write( "5x=30<BR>\n" );
document.write( "x=6\r<BR>\n" );
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document.write( "y=8-6<BR>\n" );
document.write( "y=2\r<BR>\n" );
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document.write( "<font color = blue>Hence, there are 6 dimes and 2 nickels</font>.<BR>\n" );
document.write( "Paul. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );