document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=358379>Question 358379</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A student scores 73, 79, 77, 81 on four tests.  To receive and 80 average, what must he score on the fifth test? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #255758 by </B><A HREF=/tutors/aboutme.mpl?userid=unlockmath><B>unlockmath(1688)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=unlockmath><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=unlockmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=255758\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hello, <BR>\n" );
document.write( "Let x be the fifth text score so we can form and equation as:<BR>\n" );
document.write( " (73+79+77+81+x)/5=80<BR>\n" );
document.write( "Multiply both sides by 5 toget:<BR>\n" );
document.write( "(73+79+77+81+x)=400<BR>\n" );
document.write( "Combine like terms:<BR>\n" );
document.write( "310+x=400<BR>\n" );
document.write( "Subtract 310:<BR>\n" );
document.write( "x=90<BR>\n" );
document.write( "So a score of 90 is needed. <BR>\n" );
document.write( "Got it?<BR>\n" );
document.write( "RJ<BR>\n" );
document.write( "www.math-unlock.com </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );