document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1172780>Question 1172780</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A distribution centre sends three different types of parcels. One consignment has 6 small, 8 <BR>\n" );
document.write( "medium and 9 large parcels which cost $173.20 to post. Another consignment has 7 small, 13 <BR>\n" );
document.write( "medium and 17 large parcels with total postage $291.05. A large parcel costs twice as much to <BR>\n" );
document.write( "post as a small one. Work out the total cost of posting 3 small parcels, 9 medium parcels and 2 <BR>\n" );
document.write( "large parcels.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #797903 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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/cgi-bin/show-face.mpl?user=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=797903\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "x = cost for small parcel<BR>\n" );
document.write( "y = cost for medium parcel<BR>\n" );
document.write( "2x = cost for large parcel<br><BR>\n" );
document.write( "6 small, 8 medium, 9 large:<BR>\n" );
document.write( "6(x)+8(y)+9(2x) = 173.20<BR>\n" );
document.write( "24x+8y = 173.20 (1)<br><BR>\n" );
document.write( "7 small, 13 medium, 17 large:<BR>\n" );
document.write( "7(x)+13(y)+17(2x) = 291.05<BR>\n" );
document.write( "41x+13y = 291.05 (2)<br><BR>\n" );
document.write( "Simplify (1) to 3x+y = 21.65 (3)<br><BR>\n" );
document.write( "Multiply by 13: 39x+13y = 281.45 (4)<br><BR>\n" );
document.write( "Compare (2) and (4): 2x = 9.60  -->  x = 4.80<br><BR>\n" );
document.write( "Plug x = 4.80 into any earlier equation to find y = 7.25<br><BR>\n" );
document.write( "ANSWER:<BR>\n" );
document.write( "3(x)+9(y)+2(2x) = 7x+9y = 7(4.80)+9(7.25) = 98.85<br><BR>\n" );
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