document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=760657>Question 760657</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If you bought $4000 worth of some items and sold it for $5000 dollars, making $50 on each, how much the each Item were originally bought </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #462809 by </B><A HREF=/tutors/aboutme.mpl?userid=arobin4><B>arobin4(1)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=arobin4><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=462809\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let 'a' be the quantity of items purchased.<BR>\n" );
document.write( "let 'b' be the original cost of each item.\r<BR>\n" );
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document.write( "(a)(b) = 4000  This is Equation 1\r<BR>\n" );
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document.write( "(a)(b + 50) = 5000 This is Equation 2\r<BR>\n" );
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document.write( "Solve Equation 1 and Equation 2 simultaneously.  <BR>\n" );
document.write( "Step 1: Solve for 'a' in Equation 1 to get (a)=4000/(b)\r<BR>\n" );
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document.write( "Step 2: Substitute 'a' from step 1 for 'a' in step 2 to get Equation 3 below\r<BR>\n" );
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document.write( "(4000 / b)(b + 50) = 5000 This is Equation 3\r<BR>\n" );
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document.write( "Step 3: Solve Equation 3 for 'b' to get b=$200\r<BR>\n" );
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document.write( "'b' is the original cost of each item.  Therefore the answer is $200. </SPAN>\n" );
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