document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=179297>Question 179297</A>: <I><SPAN STYLE=\"word-break: break-all;\"> At work one day, Erica Franz received 7 packages.  Speedy delivery delivered twice as many as Ralph's Express, while Ralph's Express delivered one more package than SendQuick package.  How many packages did each service deliver to Erica.\r<BR>\n" );
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document.write( "Speedy Delivery\r<BR>\n" );
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document.write( "Ralph's Express\r<BR>\n" );
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document.write( "Send Quick </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #134206 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=134206\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let number of packages speedy,ralphs,and sendquik delivered be a,b,and c respectively<BR>\n" );
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document.write( "a=2b.......eq 1<BR>\n" );
document.write( "b=c+1......eq 2<BR>\n" );
document.write( "a+b+c=7....eq 3<BR>\n" );
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document.write( "rewrite eq 2 to c=b-1 and take that value and the value of a in eq 1 and plug them into eq 3<BR>\n" );
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document.write( "(2b)+b+(b-1)=7<BR>\n" );
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document.write( "4b=8<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28b=2%29 ALIGN=MIDDLE  ALT=\"highlight%28b=2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >packages delivered by ralphs<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28a=2b=2%282%29=4%29 ALIGN=MIDDLE  ALT=\"highlight%28a=2b=2%282%29=4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >packages delivered by speedy<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28c=b-1=2-1=1%29 ALIGN=MIDDLE  ALT=\"highlight%28c=b-1=2-1=1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >package delivered by sendquick </SPAN>\n" );
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