document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=357158>Question 357158</A>: <I><SPAN STYLE=\"word-break: break-all;\"> At Johnson Middle school, 170 students buy 3 ring binders from school store. This number has been increasing at a rate of about 25 per year. The number of students buying 2 ring binders is 300 and has been decreasing at a rate of about 15 per year. At these rates, when will the number of 2 ring binders sold be half the number of 3 ring binders sold? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #255055 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=255055\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 170+25x=2(300-15x)<BR>\n" );
document.write( "170+25x=600-30x<BR>\n" );
document.write( "25x+30x=600-170<BR>\n" );
document.write( "55x=430<BR>\n" );
document.write( "x=430/55<BR>\n" );
document.write( "x=7.818 yrs. 2 ring bindes will be half as many as the 3 ring binders.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "170+25*7.818=2(300-15*7.818)<BR>\n" );
document.write( "170+195.45=2(300-117.27)<BR>\n" );
document.write( "365.45=2*182.73<BR>\n" );
document.write( "365.45~365.46 </SPAN>\n" );
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