document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1019510>Question 1019510</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The first three scores of each of the four studends are shown. Each test is 100 points. Each student hopes to maintain a mean score of 85. Find the score needed by each student on the fourth test to have mean score of 85, or explain why such value is not possible. <BR>\n" );
document.write( "A. Lisa: 78, 80, 100<BR>\n" );
document.write( "B. Mary: 90, 92 ,95<BR>\n" );
document.write( "C. Lina: 79, 80, 81<BR>\n" );
document.write( "D. Willie: 65, 80, 80 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #635853 by </B><A HREF=/tutors/aboutme.mpl?userid=LinnW><B>LinnW(1048)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=LinnW><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=LinnW><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=635853\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For 4 tests to have an average of exactly 85 we<BR>\n" );
document.write( "need the total of the 4 tests to be 4*85 = 340<BR>\n" );
document.write( "Lisa needs 340 - (78+80+100) , 340 - 258 = 82<BR>\n" );
document.write( "Mary needs 340 - (90+92+95) = 63<BR>\n" );
document.write( "Lina needs 340 - (79+80+81) = 100<BR>\n" );
document.write( "Willie needs 340 - (65+ 80+ 80 ) = 115<BR>\n" );
document.write( "Since the score Willie needs is above 100 he cannot achieve his goal.<BR>\n" );
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