document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1121545>Question 1121545</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The total number of pens in boxes X Y Z is 300.Y has 50 percent of the pens in Z.  Bob takes out one third of the pens in X trebles the number of pens in Y and puts 40 more pens in Z. Now each box has the same number of pens. Find the total number of pens now.\r<BR>\n" );
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document.write( "thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #737483 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=737483\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "Box Y has half as many as box Z, so...<br><BR>\n" );
document.write( "let n = number in box Y<BR>\n" );
document.write( "then 2n = number in box Z<br><BR>\n" );
document.write( "Since the total number in the three boxes is 300...<br><BR>\n" );
document.write( "then 300-3n = number in box X<br><BR>\n" );
document.write( "Now Bob takes 1/3 of the pens out of box X; the number now in box X is<br><BR>\n" );
document.write( "(300-3n)-(1/3)(300-3n) = 200-2n<br><BR>\n" );
document.write( "He also triples the number in box Y; the number now in box Y is 3n.<br><BR>\n" );
document.write( "We know that X and Y now have the same number, so<br><BR>\n" );
document.write( "200-2n = 3n<BR>\n" );
document.write( "200 = 5n<BR>\n" );
document.write( "n = 40<br><BR>\n" );
document.write( "The number now in boxes X and Y is 3n = 200-2n = 120.<br><BR>\n" );
document.write( "Then, since we know all three boxes now have the same number, the total now is 360. </SPAN>\n" );
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