document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=169971>Question 169971</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A truck carrying 3600 cubic feet of cargo consisting of washing machines and refrigerators was hijacked. The washing machine are worth $300 each and are shipped in 36 cubic-foot cartons. The refrigerators are worth $900 each and are shipped in 45 cubic-foot cartons. If the total value of the cargo is $51,000, then how many of each were there on the truck? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #125455 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=125455\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A truck carrying 3600 cubic feet of cargo consisting of washing machines and refrigerators was hijacked. The washing machine are worth $300 each and are shipped in 36 cubic-foot cartons. The refrigerators are worth $900 each and are shipped in 45 cubic-foot cartons. If the total value of the cargo is $51,000, then how many of each were there on the truck?<BR>\n" );
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document.write( "value equation: 300w + 900r = 51000<BR>\n" );
document.write( "volume equation: 36w + 45r  = 3600<BR>\n" );
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document.write( "Rearrange:<BR>\n" );
document.write( "w + 3r = 170<BR>\n" );
document.write( "4w + 5r = 400<BR>\n" );
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document.write( "Multiply thru 1st by 4 to get:<BR>\n" );
document.write( "4w + 12r = 4*170<BR>\n" );
document.write( "4w + 5r  = 400<BR>\n" );
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document.write( "Subtract 2nd from 1st to solve from r:<BR>\n" );
document.write( "7r = 4*170-400<BR>\n" );
document.write( "r = 40 (# of refrigerators)<BR>\n" );
document.write( "w = 170-3r = 170-3*40 = 50 (# of washers)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );