document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=173429>Question 173429</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a girl sout troop sold cookies. If the girls sold 5 more boxes the second week than they did the first, and if they doubled the sales of the second week for the third week to sell a total of 431 boxes of cookies, how many did they sell each week? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #128284 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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=128284\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> lets call the number of cookies sold in week 1,2 and 3: a,b,and c respectively<BR>\n" );
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document.write( "b=a+5.......eq 1---->a=b-5 revised eq 1<BR>\n" );
document.write( "c=2b........eq 2<BR>\n" );
document.write( "a+b+c=431...eq 3<BR>\n" );
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document.write( "lets take the value of a from revised eq 1 and the value of c in eq 2 and plug them into eq 3<BR>\n" );
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document.write( "(b-5)+b+(2b)=431<BR>\n" );
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document.write( "4b-5=431....combining b terms<BR>\n" );
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document.write( "4b=436.....combining constants<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28b=109%29 ALIGN=MIDDLE  ALT=\"highlight%28b=109%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >..........................boxes of cookies sold 2nd week<BR>\n" );
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document.write( "using revised eq 1 <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28a=b-5=109-5=104%29 ALIGN=MIDDLE  ALT=\"highlight%28a=b-5=109-5=104%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >boxes of cookies sold week 1<BR>\n" );
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document.write( "using eq 2<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28c=2b=2%28109%29=218%29 ALIGN=MIDDLE  ALT=\"highlight%28c=2b=2%28109%29=218%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.........boxes of cookies sold week 3 </SPAN>\n" );
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