document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1141187>Question 1141187</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 3/5 of the number of pens displayed at the bookstore were red and the rest were blue.After 260 red pens, and 1/4 of the blue pens were sold, 1/2 of the pens were left.How many pens were displayed at the bookstore first?<BR>\n" );
document.write( "Can you please help me how to solve this by equation??<BR>\n" );
document.write( "Thanks in advance  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #761724 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=761724\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let x be the number of pens displayed at the bookstore first<BR>\n" );
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document.write( "3x/5 are red, 2x/5 are blue<BR>\n" );
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document.write( "260 + (2x/5)/4 = x/2<BR>\n" );
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document.write( "260 + (2x/20) = x/2<BR>\n" );
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document.write( "5200 +2x = 20x/2<BR>\n" );
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document.write( "10400 +4x = 20x<BR>\n" );
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document.write( "16x = 10400<BR>\n" );
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document.write( "x = 650<BR>\n" );
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document.write( "there were 650 pens at first<BR>\n" );
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document.write( "check the answer<BR>\n" );
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document.write( "there are 390 red at first and 260 blue at first<BR>\n" );
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document.write( "260 + (260/4) = (650/2)<BR>\n" );
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document.write( "260 + 65 = 325<BR>\n" );
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document.write( "325 = 325<BR>\n" );
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document.write( "answer checks<BR>\n" );
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