 
Lenny D. answered  04/16/19
Former Tufts Economics Professor and Wall Street Economist
I would be more than happy to help you out here. I taught economics at Tufts University in Boston. I love microeconomic puzzles as much as some people are addicted to The Sunday Times crossword puzzle.
Duality is a little difficult to grasp at first. I think it is easier to comprehend looking at production and cost minimization. They are Identical.
Send me a message I know I can help you master this stuff.
 
     
             
                     
                    