document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1196288>Question 1196288</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Olivia bought four composition notebooks and three packs of pencils from the school bookstore and paid $10.93. Jackie bought seven composition notebooks and two packs of pencils and paid $13.31. What is the price of a pack of pencils? (Do not include the $ in your answer).<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #829052 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=829052\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "let the price of pack of pencils be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p ALIGN=MIDDLE  ALT=\"p\"   DISABLED_style= \"max-width:90%; height:auto;\" > and the price of a pack of composition notebooks <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n ALIGN=MIDDLE  ALT=\"n\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "if Olivia bought four composition notebooks and three packs of pencils from the school bookstore and paid $<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10.93 ALIGN=MIDDLE  ALT=\"10.93\"   DISABLED_style= \"max-width:90%; height:auto;\" >, we have\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3p%2B4n=10.93 ALIGN=MIDDLE  ALT=\"3p%2B4n=10.93\"   DISABLED_style= \"max-width:90%; height:auto;\" >.............solve for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p ALIGN=MIDDLE  ALT=\"p\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3p=10.93-4n ALIGN=MIDDLE  ALT=\"3p=10.93-4n\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p=%2810.93-4n%29%2F3 ALIGN=MIDDLE  ALT=\"p=%2810.93-4n%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >.........eq.1\r<BR>\n" );
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document.write( "if Jackie bought seven composition notebooks and two packs of pencils and paid $<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=13.31 ALIGN=MIDDLE  ALT=\"13.31\"   DISABLED_style= \"max-width:90%; height:auto;\" >, we have\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2p%2B7n=13.31 ALIGN=MIDDLE  ALT=\"2p%2B7n=13.31\"   DISABLED_style= \"max-width:90%; height:auto;\" >.............solve for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p ALIGN=MIDDLE  ALT=\"p\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2p=13.31-7n ALIGN=MIDDLE  ALT=\"2p=13.31-7n\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p=%2813.31-7n%29%2F2 ALIGN=MIDDLE  ALT=\"p=%2813.31-7n%29%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >........eq.1\r<BR>\n" );
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document.write( "from  eq.1 and  eq.2 we have\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2810.93-4n%29%2F3=%2813.31-7n%29%2F2 ALIGN=MIDDLE  ALT=\"%2810.93-4n%29%2F3=%2813.31-7n%29%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >..........cross multiply\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2810.93-4n%29=3%2813.31-7n%29 ALIGN=MIDDLE  ALT=\"2%2810.93-4n%29=3%2813.31-7n%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=21.86+-+8n=39.93+-+21n ALIGN=MIDDLE  ALT=\"21.86+-+8n=39.93+-+21n\"   DISABLED_style= \"max-width:90%; height:auto;\" >..........solve for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n ALIGN=MIDDLE  ALT=\"n\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=21n+-+8n=39.93+-21.86+ ALIGN=MIDDLE  ALT=\"21n+-+8n=39.93+-21.86+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=13n=18.07+ ALIGN=MIDDLE  ALT=\"13n=18.07+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n=18.07%2F13+ ALIGN=MIDDLE  ALT=\"n=18.07%2F13+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n=1.39+ ALIGN=MIDDLE  ALT=\"n=1.39+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "go to  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p=%2813.31-7n%29%2F2 ALIGN=MIDDLE  ALT=\"p=%2813.31-7n%29%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >........eq.1, substitute <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n=1.39+ ALIGN=MIDDLE  ALT=\"n=1.39+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p=%2813.31-7%2A1.39%29%2F2 ALIGN=MIDDLE  ALT=\"p=%2813.31-7%2A1.39%29%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p=3.58%2F2 ALIGN=MIDDLE  ALT=\"p=3.58%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p=1.79 ALIGN=MIDDLE  ALT=\"p=1.79\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "so,  the price of a pack of pencils is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.79 ALIGN=MIDDLE  ALT=\"1.79\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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