Re: Question on linear programming duality

Thank you Paul. 
I only have balance equations, with bounds placed on certain
variables. Given this, I am trying to make sense of what the LP means
to say when a node balance equation has a zero or non-zero dual.
In essense, I am trying to interpret the dual values on the balance
equations to some physical constraints (represented by the bounds on
the activity variables).

eg for a inventory balance equation, I have:
    production - consumption + carry_over = 0 

and production is constrained by some capacity:
   production - capacity = 0

and there is a bound on capacity:
   0 <= capacity <= Upper_limit

Any help would be welcome. 

Thanks
Anirban