document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=863449>Question 863449</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Judy made 84% on her last math test.  If she missed 4 problems, how many questions were on the test?<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 #520422 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=520422\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x = number of questions on the test\r<BR>\n" );
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document.write( "She missed 4 questions, so she got x-4 questions correct.\r<BR>\n" );
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document.write( "84% of (number of questions on test) = number of correct answers\r<BR>\n" );
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document.write( "0.84x = x - 4\r<BR>\n" );
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document.write( "0.84x-x = -4\r<BR>\n" );
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document.write( "-0.16x = -4\r<BR>\n" );
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document.write( "x = -4/(-0.16)\r<BR>\n" );
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document.write( "x = 25\r<BR>\n" );
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document.write( "So there are <font size=4 color=\"red\">25</font> questions total on the test. She missed 4 of them, so she got 25-21 = 24 questions correct. Notice how 21/25 = 0.84 ---> 0.84*100 = 84% </SPAN>\n" );
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