document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=971283>Question 971283</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A man bought 200 books. He sold 80 of them at a profit of 15% and the remaining at a profit of 50%. He realized Rs.27200 in total. What was his cost of books?<BR>\n" );
document.write( "1; 18,000<BR>\n" );
document.write( "2; 22,000<BR>\n" );
document.write( "3; 20,000<BR>\n" );
document.write( "4; 24,000<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #593821 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=593821\">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=+c+ ALIGN=MIDDLE  ALT=\"+c+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the cost of the 200 books<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c%2F200+ ALIGN=MIDDLE  ALT=\"+c%2F200+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the cost of each book<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+80%2A%28+c%2F200+%29+ ALIGN=MIDDLE  ALT=\"+80%2A%28+c%2F200+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the cost of the 80 <BR>\n" );
document.write( "books that he sold<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1.15%2A%28+80%2A%28+c%2F200+%29%29+ ALIGN=MIDDLE  ALT=\"+1.15%2A%28+80%2A%28+c%2F200+%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = his selling<BR>\n" );
document.write( "price of the 80 books<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1.5%2A%28+120%2A%28+c%2F200+%29%29+ ALIGN=MIDDLE  ALT=\"+1.5%2A%28+120%2A%28+c%2F200+%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = his selling<BR>\n" );
document.write( "price of the remaining books<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "I can say:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1.15%2A%28+80%2A%28+c%2F200+%29%29+%2B+1.5%2A%28+120%2A%28+c%2F200+%29%29+=+27200+ ALIGN=MIDDLE  ALT=\"+1.15%2A%28+80%2A%28+c%2F200+%29%29+%2B+1.5%2A%28+120%2A%28+c%2F200+%29%29+=+27200+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1.15%2A.4c+%2B+1.5%2A.6c+=+27200+ ALIGN=MIDDLE  ALT=\"+1.15%2A.4c+%2B+1.5%2A.6c+=+27200+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.46c+%2B+.9c+=+27200+ ALIGN=MIDDLE  ALT=\"+.46c+%2B+.9c+=+27200+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1.36c+=+27200+ ALIGN=MIDDLE  ALT=\"+1.36c+=+27200+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c+=+20000+ ALIGN=MIDDLE  ALT=\"+c+=+20000+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "answer is (3)<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );