document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=698875>Question 698875</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The average score on kims first 4 tests is 78. Her score on her 5th test raises her average for all 5 tests to 81 what was her score on her 5th test? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #431086 by </B><A HREF=/tutors/aboutme.mpl?userid=Simnepi><B>Simnepi(216)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Simnepi><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=Simnepi><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=431086\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Kim's total score on the first 4 tests must have been 4*78 for her to get a mean score of 78. We don't know what the individual scores were, we just know that the total was 312 (4*78).<BR>\n" );
document.write( "For KIm to average 81 over 5 tests means that her total score over the 5 tests was 5*81 = 405.<BR>\n" );
document.write( "The difference between those two scores, one over 4 tests and the other over 5 tests gives Kim's score over the 5th test.<BR>\n" );
document.write( "405 - 312 = 87.<BR>\n" );
document.write( "She scored 87 in the 5th test. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );