document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=151789>Question 151789</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi,<BR>\n" );
document.write( "I need help with the following:\r<BR>\n" );
document.write( "\n" );
document.write( "Translate the following into a system of equations, then solve it:A customer walks into an electronics store and buys five MP3 players and eight sets of headphones, paying $840.  A second customer buys three MP3 players and four sets of headphones, and pays $480.  How much does an MP3 player cost?  How much does a set of headphones cost? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #111586 by </B><A HREF=/tutors/aboutme.mpl?userid=jojo14344><B>jojo14344(1513)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jojo14344><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=111586\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let us see the situations:<BR>\n" );
document.write( "1st customer:<BR>\n" );
document.write( "5MP+8HP=$840 ----------------> eqn 1<BR>\n" );
document.write( "2nd customer:<BR>\n" );
document.write( "3MP+4HP=$480 ----------------> eqn 2<BR>\n" );
document.write( "In eqn 2 we get, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=HP=%28480-3MP%29%2F4 ALIGN=MIDDLE  ALT=\"HP=%28480-3MP%29%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > and substitute in eqn 1:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5MP%2Bcross%288%292%28480-3MP%29%2Fcross%284%29=840 ALIGN=MIDDLE  ALT=\"5MP%2Bcross%288%292%28480-3MP%29%2Fcross%284%29=840\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5MP%2B960-6MP=840 ALIGN=MIDDLE  ALT=\"5MP%2B960-6MP=840\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=960-840=6MP-5MP ALIGN=MIDDLE  ALT=\"960-840=6MP-5MP\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=MP=120 ALIGN=MIDDLE  ALT=\"MP=120\"   DISABLED_style= \"max-width:90%; height:auto;\" > ----------------------> cost of an MP3 player<BR>\n" );
document.write( "For Head phones set, go back eqn 2:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2A120%2B4HP=480 ALIGN=MIDDLE  ALT=\"3%2A120%2B4HP=480\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=HP=%28480-360%29%2F4 ALIGN=MIDDLE  ALT=\"HP=%28480-360%29%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=HP=30 ALIGN=MIDDLE  ALT=\"HP=30\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "In doubt? Go back eqn 1:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%28120%29%2B8%2830%29=840 ALIGN=MIDDLE  ALT=\"5%28120%29%2B8%2830%29=840\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=600%2B240=840 ALIGN=MIDDLE  ALT=\"600%2B240=840\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=840=840 ALIGN=MIDDLE  ALT=\"840=840\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Thank you,<BR>\n" );
document.write( "Jojo </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );