document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=101921>Question 101921</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The average cost of six houses is $135,000.  The cost of five of the houses is $128,000; $167,500; $105,400; $152,900; and $137,600.  What is the cost of the sixth house?   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #74111 by </B><A HREF=/tutors/aboutme.mpl?userid=doukungfoo><B>doukungfoo(195)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=doukungfoo><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=doukungfoo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=74111\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> To find the average of 6 numbers you need to add them together and divide by 6.<BR>\n" );
document.write( "We are given the cost for each of five houses.<BR>\n" );
document.write( "And we are given the average cost of these five house plus another is $135000<BR>\n" );
document.write( "So first add the prices we are given for the five houses.<BR>\n" );
document.write( "128000 + 167500 + 105400 + 152900 + 137600 = 691400<BR>\n" );
document.write( "Ok so 691400 plus the cost of the sixth house divided by 6 equals 135000<BR>\n" );
document.write( "If we call the sixth house x we can write an equation to solve for x.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28691400%2Bx%29%2F6=135000 ALIGN=MIDDLE  ALT=\"%28691400%2Bx%29%2F6=135000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "lets solve for x<BR>\n" );
document.write( "first multiply both sides of the equation by 6<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=691400%2Bx=810000 ALIGN=MIDDLE  ALT=\"691400%2Bx=810000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "now subtract 691400 from both sides<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=691400-691400%2Bx=810000-691400 ALIGN=MIDDLE  ALT=\"691400-691400%2Bx=810000-691400\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=118600 ALIGN=MIDDLE  ALT=\"x=118600\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<b>Answer: The cost of the sixth house is $118,600</b><BR>\n" );
document.write( "Check the anwser:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28691400%2Bx%29%2F6=135000 ALIGN=MIDDLE  ALT=\"%28691400%2Bx%29%2F6=135000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28691400%2B118600%29%2F6=135000 ALIGN=MIDDLE  ALT=\"%28691400%2B118600%29%2F6=135000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=810000%2F6=135000 ALIGN=MIDDLE  ALT=\"810000%2F6=135000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=135000=135000 ALIGN=MIDDLE  ALT=\"135000=135000\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );