document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=883967>Question 883967</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a class of 10 people, the average mark for the test was 75%.If an additional person takes the test, what mark must they attain to move the average up 80% - Show calculation pls </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #533904 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=533904\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In a class of 10 people, the average mark for the test was 75%.If an additional person takes the test, what mark must they attain to move the average up 80%<BR>\n" );
document.write( "***<BR>\n" );
document.write( "so far, 10 people taking the test scored a total of 10*75=750 points.<BR>\n" );
document.write( "let x=score one additional person must make to move the average up to 80<BR>\n" );
document.write( "(750+x)/(10+1)=80<BR>\n" );
document.write( "750+x/11=80<BR>\n" );
document.write( "750+x=880<BR>\n" );
document.write( "x=130<BR>\n" );
document.write( "score one additional person must make to move the average up to 80=130 </SPAN>\n" );
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