document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=712387>Question 712387</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Nadine paid $4800 to buy a certain number of t-shirts for the math club members. Eight  shirts were slightly damaged, so the store owner gave her 8 extra shirts effectively decreasing the cost per item by $20.  How many shirts (including the 8 extra) did she buy?\r<BR>\n" );
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document.write( "I will appreciate if the step by step solution is posted.\r<BR>\n" );
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document.write( "Thank you,\r<BR>\n" );
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document.write( "Ariel Halili </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #437894 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=437894\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+ ALIGN=MIDDLE  ALT=\"+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the number of shirts she bought<BR>\n" );
document.write( "The cost per item is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4800%2Fn+ ALIGN=MIDDLE  ALT=\"+4800%2Fn+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "The owner gave her <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+8+ ALIGN=MIDDLE  ALT=\"+8+\"   DISABLED_style= \"max-width:90%; height:auto;\" > shirts, so then<BR>\n" );
document.write( "she had <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+%2B+8+ ALIGN=MIDDLE  ALT=\"+n+%2B+8+\"   DISABLED_style= \"max-width:90%; height:auto;\" > shirts<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4800+%2F+%28+n%2B8+%29+=+4800%2Fn+-+20+ ALIGN=MIDDLE  ALT=\"+4800+%2F+%28+n%2B8+%29+=+4800%2Fn+-+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "This says:<BR>\n" );
document.write( "( cost/shirt with 8 shirts added ) = ( $20 less than original cost/shirt ) <BR>\n" );
document.write( "Multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n%2A%28+n%2B8+%29+ ALIGN=MIDDLE  ALT=\"+n%2A%28+n%2B8+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4800n+=+4800%2A%28+n%2B8+%29+-+20n%2A%28+n+%2B+8+%29+ ALIGN=MIDDLE  ALT=\"+4800n+=+4800%2A%28+n%2B8+%29+-+20n%2A%28+n+%2B+8+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4800n+=+4800n+%2B+38400+-+20n%5E2+-+160n+ ALIGN=MIDDLE  ALT=\"+4800n+=+4800n+%2B+38400+-+20n%5E2+-+160n+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-20n%5E2+-+160n+%2B+38400+=+0+ ALIGN=MIDDLE  ALT=\"+-20n%5E2+-+160n+%2B+38400+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Divide both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+20+ ALIGN=MIDDLE  ALT=\"+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-n%5E2+-+8n+%2B+1920+=+0+ ALIGN=MIDDLE  ALT=\"+-n%5E2+-+8n+%2B+1920+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use quadratic formula<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+%28-b+%2B-+sqrt%28+b%5E2+-+4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"+n+=+%28-b+%2B-+sqrt%28+b%5E2+-+4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+=+-1+ ALIGN=MIDDLE  ALT=\"+a+=+-1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+-8+ ALIGN=MIDDLE  ALT=\"+b+=+-8+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c+=+1920+ ALIGN=MIDDLE  ALT=\"+c+=+1920+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+%28-%28-8%29+%2B-+sqrt%28+%28-8%29%5E2+-+4%2A%28-1%29%2A1920+%29%29+%2F+%282%2A%28-1%29%29+ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+%28+8+%2B-+sqrt%28+64+%2B+7680+%29%29+%2F+%28-2%29+ ALIGN=MIDDLE  ALT=\"+n+=+%28+8+%2B-+sqrt%28+64+%2B+7680+%29%29+%2F+%28-2%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+%28+8+%2B-+sqrt%28+7744+%29%29+%2F+%28-2%29+ ALIGN=MIDDLE  ALT=\"+n+=+%28+8+%2B-+sqrt%28+7744+%29%29+%2F+%28-2%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+%28+8+%2B+88+%29+%2F+%28-2%29+ ALIGN=MIDDLE  ALT=\"+n+=+%28+8+%2B+88+%29+%2F+%28-2%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+96%2F%28-2%29+ ALIGN=MIDDLE  ALT=\"+n+=+96%2F%28-2%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+-48+ ALIGN=MIDDLE  ALT=\"+n+=+-48+\"   DISABLED_style= \"max-width:90%; height:auto;\" > ( discard this result- can't be negative )<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+%28+8+-+88+%29+%2F+%28-2%29+ ALIGN=MIDDLE  ALT=\"+n+=+%28+8+-+88+%29+%2F+%28-2%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+%28+-80+%29+%2F+%28-2%29+ ALIGN=MIDDLE  ALT=\"+n+=+%28+-80+%29+%2F+%28-2%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+40+ ALIGN=MIDDLE  ALT=\"+n+=+40+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "She bought 40 + 8 = 48 shirts<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4800+%2F+%28+n%2B8+%29+=+4800%2Fn+-+20+ ALIGN=MIDDLE  ALT=\"+4800+%2F+%28+n%2B8+%29+=+4800%2Fn+-+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4800+%2F+%28+40%2B8+%29+=+4800%2F40+-+20+ ALIGN=MIDDLE  ALT=\"+4800+%2F+%28+40%2B8+%29+=+4800%2F40+-+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4800+%2F+48+=+4800+%2F+40+-+20+ ALIGN=MIDDLE  ALT=\"+4800+%2F+48+=+4800+%2F+40+-+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+100+=+120+-+20+ ALIGN=MIDDLE  ALT=\"+100+=+120+-+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+100+=+100+ ALIGN=MIDDLE  ALT=\"+100+=+100+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );