document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=512362>Question 512362</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A merchant has coffee worth$30 a pound that she wishes to mix with 30 pounds of coffee worth $70 a pound to get a mixture that can be sold for $40 a pound,How many pounds of the $30 coffee should be used? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #342609 by </B><A HREF=/tutors/aboutme.mpl?userid=Maths68><B>Maths68(1474)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Maths68><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=Maths68><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=342609\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Coffee1=x lb<BR>\n" );
document.write( "Coffee2=30 lb<BR>\n" );
document.write( "Mixture=30+x lb\r<BR>\n" );
document.write( "\n" );
document.write( "Price per pound Coffee1 = $30<BR>\n" );
document.write( "Price per pound Coffee2 = $70<BR>\n" );
document.write( "Price per pound Mixture = $40\r<BR>\n" );
document.write( "\n" );
document.write( "Coffee1*Price + Coffee2*Price=Mixture*Price<BR>\n" );
document.write( "(x*30)+(30*70)=(30+x)40<BR>\n" );
document.write( "30x+2100=1200+40x<BR>\n" );
document.write( "30x-40x=1200-2100<BR>\n" );
document.write( "-10x=-900<BR>\n" );
document.write( "-10x/-10=-900/-10<BR>\n" );
document.write( "x=90<BR>\n" );
document.write( "90 pounds of the $30 coffee should be used<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );