document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=941717>Question 941717</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A shipment of TV sets, some weighing 30 kg each and the others weighing 50 kg each, has a total weight of 880 kg. If there are 20 TV sets all together, how many weigh 50 kg? <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 #574114 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=574114\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Lighter TV sets=L Heavier sets =H<BR>\n" );
document.write( "L+H=20<BR>\n" );
document.write( "30L+50H=880<BR>\n" );
document.write( "Solve first equation for H and substitute in second<BR>\n" );
document.write( "H=20-L<BR>\n" );
document.write( "30L+50(20-L)=880<BR>\n" );
document.write( "30L+1000-50L=880<BR>\n" );
document.write( "-20L+1000=880 divide both sides by -20<BR>\n" );
document.write( "(-20L+1000)/-20=880/-20<BR>\n" );
document.write( "L-50=-44  add 50 to each side<BR>\n" );
document.write( "L-50+50=-44+50<BR>\n" );
document.write( "L=6 ANSWER 1 there were 6 of the lighter sets<BR>\n" );
document.write( "H=20-L=20-6=14 ANSWER 2 there were 14 of the heavier sets<BR>\n" );
document.write( "CHECK:<BR>\n" );
document.write( "30 kg(L)+ 50 kg(H)= 880 kg<BR>\n" );
document.write( "30 kg (6) +50 kg (14)=880 kg<BR>\n" );
document.write( "180 kg + 700 kg=880 kg<BR>\n" );
document.write( "880 kg=880 kg<BR>\n" );
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