document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=150688>Question 150688</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mrs Tan bought a DVD player and a HI-FI set at a discount of 20%. She paid a total of $2800. If the price of the DVD player is 40% that of the HI-FI set, what was the price of the DVD player before the discount? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #110650 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=110650\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Mrs Tan bought a DVD player and a HI-FI set at a discount of 20%. She paid a total of $2800. If the price of the DVD player is 40% that of the HI-FI set, what was the price of the DVD player before the discount?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let x = cost of hi-fi set<BR>\n" );
document.write( "then<BR>\n" );
document.write( ".40x = cost of dvd player<BR>\n" );
document.write( ".<BR>\n" );
document.write( "we derive oure equation from: \"Mrs Tan bought a DVD player and a HI-FI set at a discount of 20%. She paid a total of $2800.\"<BR>\n" );
document.write( ".80(x + .40x) = 2800<BR>\n" );
document.write( "(x + .40x) = 3500<BR>\n" );
document.write( "x(1+.40) = 3500<BR>\n" );
document.write( "x(1.40) = 3500<BR>\n" );
document.write( "x = 3500/1.40<BR>\n" );
document.write( "x = $2500(cost of hi-fi set)<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".40x = .40(2500) = $1000 (cost of dvd)<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );