document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=103000>Question 103000</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If you bought 850 Douglas firs and ponderosa pines and paid an average of $300 for douglas firs and  $225 for ponderosa pines and the total you spent was $217,500 how many of each tree did you buy? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #75159 by </B><A HREF=/tutors/aboutme.mpl?userid=HyperBrain><B>HyperBrain(694)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=HyperBrain><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=75159\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x= no. of firs<BR>\n" );
document.write( "    y= no. of ponderosa\r<BR>\n" );
document.write( "\n" );
document.write( "(1)x+y=850<BR>\n" );
document.write( "(2)300x+225y=217500\r<BR>\n" );
document.write( "\n" );
document.write( "Substituting (1) to (2),\r<BR>\n" );
document.write( "\n" );
document.write( "300*(850-y)+225y=217500<BR>\n" );
document.write( "255000-300y+225y=217500<BR>\n" );
document.write( "255000-75y=217500<BR>\n" );
document.write( "75y=3750<BR>\n" );
document.write( "y=500<BR>\n" );
document.write( "x+500=850<BR>\n" );
document.write( "x=350\r<BR>\n" );
document.write( "\n" );
document.write( "Therefore, he bought 350 firs and 500 ponderosas! </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );