Question 820354
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
Because of mass production, the cost to produce a certain DVD <u>varies inversely</u> as the number of DVDs produced.
If 4000 can be produced at a cost of $1.20 each, 
what is the cost{{{green(X)}}} per DVD if 6000 are produced?
   {{{4000(1.20) = 6000X}}}
   {{{(4000/6000)(1.20) = X}}}
       (2/3)$1.20 = X 
             $0.80 = X