document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1112553>Question 1112553</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An equal amount of money was spent on 4 similar lamps and 9 similar light bulbs . Each lamp coast $20 more than each light bulb.How much was spent together ? \r<BR>\n" );
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document.write( " I tried  but I got remainders. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #727603 by </B><A HREF=/tutors/aboutme.mpl?userid=addingup><B>addingup(3677)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=addingup><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=addingup><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=727603\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> lamp = x<BR>\n" );
document.write( "light bulb = y<BR>\n" );
document.write( "x = y + 20<BR>\n" );
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document.write( "4(y + 20) = 9y <BR>\n" );
document.write( "4y + 80 = 9y <BR>\n" );
document.write( "80 = 5y reverse the numbers to get the unknown on the left (looks better)<BR>\n" );
document.write( "5y = 80<BR>\n" );
document.write( "y = 16 the bulbs are $16 each<BR>\n" );
document.write( "the lamps: 16+20 = $36 each<BR>\n" );
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document.write( "Check:<BR>\n" );
document.write( "4(36) = 9(16)<BR>\n" );
document.write( "144 = 144 Correct<BR>\n" );
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