document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=379446>Question 379446</A>: <I><SPAN STYLE=\"word-break: break-all;\"> b)    A family of 2 adults and 3 kids go and watch a movie. The price of an adult ticket is m and the price of a child ticket is n such that:\r<BR>\n" );
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document.write( "2m + 3n = 28 and n = 12 - m\r<BR>\n" );
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document.write( "I thought I would solve it by simply doing\r<BR>\n" );
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document.write( "2m+3(0)=28  and then solve for n the same but this is not working out.<BR>\n" );
document.write( "2m=28<BR>\n" );
document.write( "m=14\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #269376 by </B><A HREF=/tutors/aboutme.mpl?userid=rapaljer><B>rapaljer(4671)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rapaljer><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=rapaljer><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=269376\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You are assuming that n=0, which is not the case.  What you really need to do is use the n=12-m to substitute into the first equation in place of the n like this:\r<BR>\n" );
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document.write( "n=12-m<BR>\n" );
document.write( "2m+3n=28\r<BR>\n" );
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document.write( "2m+3(     ) = 28<BR>\n" );
document.write( "2m+3(12-m)=28\r<BR>\n" );
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document.write( "Now, solve for m:\r<BR>\n" );
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document.write( "2m + 36-3m = 28<BR>\n" );
document.write( "36-m=28<BR>\n" );
document.write( "-m=28-36<BR>\n" );
document.write( "-m=-8<BR>\n" );
document.write( "m=8\r<BR>\n" );
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document.write( "Now, substitute m=8 into the n equation:<BR>\n" );
document.write( "n=12-m<BR>\n" );
document.write( "n=12-8<BR>\n" );
document.write( "n=4\r<BR>\n" );
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document.write( "Dr. Rapalje </SPAN>\n" );
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