document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1179894>Question 1179894</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The cost (c) of materials for a deck varies jointly with the width (w) and the length (l).<BR>\n" );
document.write( "If c = $470.40 when w = 12 and l = 16, find the cost when w = 10 and l = 25? Be sure to respond in a<BR>\n" );
document.write( "complete sentence that explains your answer in relation to the question. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #809716 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=809716\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> c=k*w*l<BR>\n" );
document.write( "470.40=k*12*16=192k<BR>\n" );
document.write( "k=2.45<BR>\n" );
document.write( "now use k in the second part.<BR>\n" );
document.write( "cost=2.45*10*25=$612.50<BR>\n" );
document.write( "as the product of width and length increases, cost increases.  Here the product to begin with was 192 and the end was 250, so the cost should increase by a factor of 250/192 or 1.302 (rounded). </SPAN>\n" );
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