document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=415950>Question 415950</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The first 100 cost $10 each and the next 200 cost $5 each.  How much should Roger pay for the next 100 if the overall average price is to be $10.\r<BR>\n" );
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document.write( "The answer is supposed to be $20 but I can't figure it out.  Can someone please help? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #291514 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=291514\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  The first 100 cost $10 each and the next 200 cost $5 each. How much should Roger pay for the next 100 if the overall average price is to be $10. <BR>\n" );
document.write( "The answer is supposed to be $20 <BR>\n" );
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document.write( "Average value Equation: <BR>\n" );
document.write( "(100*10 + 200*5 + 100*x)/400 = 10<BR>\n" );
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document.write( "(2000 + 100x) = 4000<BR>\n" );
document.write( "100x = 2000<BR>\n" );
document.write( "x = $20<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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