document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=168105>Question 168105</A>: <I><SPAN STYLE=\"word-break: break-all;\"> My question is about percentages:\r<BR>\n" );
document.write( "\n" );
document.write( "test 1 = 25%   have 76%<BR>\n" );
document.write( "test 2 = 25%   have 77%<BR>\n" );
document.write( "test 3 = 30%<BR>\n" );
document.write( "I need a 75% avg from my tests in order for me to add on the other 20%. I can figure out my avg from test 1 and 2 but what is the formula to predict the lowest grade I can get from 3rd test considering it is worth 30% and not 25%? \r<BR>\n" );
document.write( "\n" );
document.write( "quizzes = 5%  have 100%<BR>\n" );
document.write( "essay = 5%  = have 100%<BR>\n" );
document.write( "project = 10% ?? not finished \r<BR>\n" );
document.write( "\n" );
document.write( "Can't figure out how much I need to get a 90% in class.\r<BR>\n" );
document.write( "\n" );
document.write( "Thanks,<BR>\n" );
document.write( "jessiejames </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #123915 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=123915\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> test 1 = 25% have 76%<BR>\n" );
document.write( "test 2 = 25% have 77%<BR>\n" );
document.write( "test 3 = 30% have x%<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".25(76) + .25(77) + .30(x) >= 75<BR>\n" );
document.write( "19 + 19.25 + .30(x) >= 75<BR>\n" );
document.write( "38.25 + .30(x) >= 75<BR>\n" );
document.write( ".30(x) >= 36.75<BR>\n" );
document.write( "x >= 36.75/.30<BR>\n" );
document.write( "x >= 122.5<BR>\n" );
document.write( ".<BR>\n" );
document.write( "This says you need to score 122.5% on test 3.  <BR>\n" );
document.write( "Which is impossible unless you can score \"extra credit\".<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );