document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=990062>Question 990062</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In 1980 every student at South High School to exactly 1 of 3 science courses chemistry biology or physics at all but 250 students to chemistry exactly one-half of all the students took biology and exactly 72 physics how many students attended South High School. Year </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #610163 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52793)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=610163\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "Chemistry: x - 250\r<BR>\n" );
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document.write( "Biology: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2F2 ALIGN=MIDDLE  ALT=\"x%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Physics: 72.\r<BR>\n" );
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document.write( "Equation:\r<BR>\n" );
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document.write( "(x-250) + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2F2 ALIGN=MIDDLE  ALT=\"x%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 72 = x.\r<BR>\n" );
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document.write( "Solve it:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2F2 ALIGN=MIDDLE  ALT=\"x%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 250 - 72 = 178.\r<BR>\n" );
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document.write( "x = 178*2 = 356. \r<BR>\n" );
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document.write( "<U>Check</U>: (356-250) + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=356%2F2 ALIGN=MIDDLE  ALT=\"356%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 72 = 106 + 178 + 72 = 356.\r<BR>\n" );
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document.write( "<B>Answer</B>. 356 students.\r<BR>\n" );
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