document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=697884>Question 697884</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the average of three number is 39.if the first number is twice the second and the second is four times the third,find the numbers </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #430318 by </B><A HREF=/tutors/aboutme.mpl?userid=Stitch><B>Stitch(470)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Stitch><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=430318\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Equation 1:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+2B ALIGN=MIDDLE  ALT=\"A+=+2B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Equation 2:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=B+=+4C ALIGN=MIDDLE  ALT=\"B+=+4C\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Equation 3:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28A%2BB%2BC%29%2F3+=+39 ALIGN=MIDDLE  ALT=\"%28A%2BB%2BC%29%2F3+=+39\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Since B = 4C and A = 2B; A = 4C*2<BR>\n" );
document.write( "So A = 8C<BR>\n" );
document.write( "Rewrite equation 3 in terms of C<BR>\n" );
document.write( "Equation 3:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28A%2BB%2BC%29%2F3+=+39 ALIGN=MIDDLE  ALT=\"%28A%2BB%2BC%29%2F3+=+39\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%288C+%2B+4C+%2B+C%29+%2F+3+=+39 ALIGN=MIDDLE  ALT=\"%288C+%2B+4C+%2B+C%29+%2F+3+=+39\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by 3<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8C+%2B+4C+%2B+C+=+117 ALIGN=MIDDLE  ALT=\"8C+%2B+4C+%2B+C+=+117\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Simplify<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=13C+=+117 ALIGN=MIDDLE  ALT=\"13C+=+117\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Divide both sides by 13<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28C+=+9%29 ALIGN=MIDDLE  ALT=\"highlight%28C+=+9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now plug 9 into equation 2 for C<BR>\n" );
document.write( "Equation 2:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=B+=+4C ALIGN=MIDDLE  ALT=\"B+=+4C\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=B+=+4%2A%289%29 ALIGN=MIDDLE  ALT=\"B+=+4%2A%289%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28B+=+36%29 ALIGN=MIDDLE  ALT=\"highlight_green%28B+=+36%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now plug 36 into equation 1 for B<BR>\n" );
document.write( "Equation 1:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+2B ALIGN=MIDDLE  ALT=\"A+=+2B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+2%2A%2836%29 ALIGN=MIDDLE  ALT=\"A+=+2%2A%2836%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28A+=+72%29 ALIGN=MIDDLE  ALT=\"highlight%28A+=+72%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );