document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=414585>Question 414585</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A coin consists of 1/5 zinc, 1/10 manganese, and 1/40 copper. The rest of the coin is nickel. What fraction of the coin is nickel? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #290819 by </B><A HREF=/tutors/aboutme.mpl?userid=gwendolyn><B>gwendolyn(128)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=gwendolyn><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=gwendolyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=290819\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let n= the amount of nickel in the coin.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1=%281%2F5%29%2B%281%2F10%29%2B%281%2F40%29%2B%28n%29 ALIGN=MIDDLE  ALT=\"1=%281%2F5%29%2B%281%2F10%29%2B%281%2F40%29%2B%28n%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "This means that the coin's consistency (represented by the '1,' because all of the materials in the coin should add up to make a whole coin) is equal to all of the materials added together, including the unknown amount of nickel.<BR>\n" );
document.write( "To solve this, we should first add together the like terms (all the fractions).<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281%2F5%29%2B%281%2F10%29%2B%281%2F40%29=%2813%2F40%29 ALIGN=MIDDLE  ALT=\"%281%2F5%29%2B%281%2F10%29%2B%281%2F40%29=%2813%2F40%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Therefore, we know that:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1=%2813%2F40%29%2B%28n%29 ALIGN=MIDDLE  ALT=\"1=%2813%2F40%29%2B%28n%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Finally, to determine the value of n, we should subtract the total amount of non-nickel material from the whole of the coin to determine how much nickel is in it.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1-%2813%2F40%29=n ALIGN=MIDDLE  ALT=\"1-%2813%2F40%29=n\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2827%2F40%29=n ALIGN=MIDDLE  ALT=\"%2827%2F40%29=n\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Therefore, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=27%2F40 ALIGN=MIDDLE  ALT=\"27%2F40\"   DISABLED_style= \"max-width:90%; height:auto;\" > of the coin is nickel. </SPAN>\n" );
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