document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1119359>Question 1119359</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The&#8203; average, or&#8203; mean, D&#8203;, of three exam&#8203; grades, w&#8203;, r&#8203;, and v&#8203;, is given by the following formula.<BR>\n" );
document.write( " D = w+r+v over 3 <BR>\n" );
document.write( "&#8203;(a) Solve the formula for v.<BR>\n" );
document.write( "&#8203;(b) Use the formula in part&#8203; (a) to solve this problem. On your first two&#8203; exams, your grades are 86&#8203;% and 89&#8203;%: w=86 and r=89. What must you get on the third exam to have an average of 86&#8203;%? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #734882 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=734882\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> D=(w+r+v)/3; 3D=w+r+v; v=3D-w-r<BR>\n" );
document.write( "Substitute<BR>\n" );
document.write( "v=258-86-89<BR>\n" );
document.write( "v=83% </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );