document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=633848>Question 633848</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What must Sara get on here next test to average 80% if her previous test scores were 78, 88, 83, and 81? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #399202 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley79><B>checkley79(3341)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley79><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=399202\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (78+88+83+81+x)/5=80<BR>\n" );
document.write( "(330+x)/5=80<BR>\n" );
document.write( "330+x=5*80<BR>\n" );
document.write( "330+x=400<BR>\n" );
document.write( "x=400-330<BR>\n" );
document.write( "x=70 ans. for the last test score.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "(78+88+83+81+70)/5=80<BR>\n" );
document.write( "400/5=80<BR>\n" );
document.write( "80=80\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );