document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=885833>Question 885833</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If the average (arithmetic mean) of six numbers is 28 and the average of two of these numbers is 18, what is the average of the other four numbers?<BR>\n" );
document.write( "a) 29<BR>\n" );
document.write( "b) 30<BR>\n" );
document.write( "c) 31<BR>\n" );
document.write( "d) 32<BR>\n" );
document.write( "e) 33 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #535485 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=535485\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> WITH CALCULATOR:<BR>\n" );
document.write( "For the six numbers:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=average=SUM%2F6=28 ALIGN=MIDDLE  ALT=\"average=SUM%2F6=28\"   DISABLED_style= \"max-width:90%; height:auto;\" >---><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=SUM=28%2A6=168 ALIGN=MIDDLE  ALT=\"SUM=28%2A6=168\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " <BR>\n" );
document.write( "For the two numbers averaging 18:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=average=sum%2F2=18 ALIGN=MIDDLE  ALT=\"average=sum%2F2=18\"   DISABLED_style= \"max-width:90%; height:auto;\" >---><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sum=18%2A2=36 ALIGN=MIDDLE  ALT=\"sum=18%2A2=36\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " <BR>\n" );
document.write( "The sum of the other four numbers is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=168-36=132 ALIGN=MIDDLE  ALT=\"168-36=132\"   DISABLED_style= \"max-width:90%; height:auto;\" > , and the average of those four numbers is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=152%2F4=highlight%2833%29 ALIGN=MIDDLE  ALT=\"152%2F4=highlight%2833%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " <BR>\n" );
document.write( "IN MY HEAD:<BR>\n" );
document.write( "Those two numbers averaging 18 are (on the average)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=28-18=10 ALIGN=MIDDLE  ALT=\"28-18=10\"   DISABLED_style= \"max-width:90%; height:auto;\" > lower than average.<BR>\n" );
document.write( "The <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2A10=20 ALIGN=MIDDLE  ALT=\"2%2A10=20\"   DISABLED_style= \"max-width:90%; height:auto;\" > units missing must have been made up by the other <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4 ALIGN=MIDDLE  ALT=\"4\"   DISABLED_style= \"max-width:90%; height:auto;\" > numbers<BR>\n" );
document.write( "That means that the average of those other <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4 ALIGN=MIDDLE  ALT=\"4\"   DISABLED_style= \"max-width:90%; height:auto;\" > numbers must be<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=20%2F4=5 ALIGN=MIDDLE  ALT=\"20%2F4=5\"   DISABLED_style= \"max-width:90%; height:auto;\" > units higher than the average of all six numbers.<BR>\n" );
document.write( "So the average of the other four numbers is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=28%2B5=33 ALIGN=MIDDLE  ALT=\"28%2B5=33\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );