p oud = €1,20p nieuw = €1.40
q oud = (-1.000 x €1,20) + 2.000 = 800 stuks
q nieuw = (-1.000 x €1,40) + 2.000 = 600 stuks
Omzet oud = p x q = 1,20 x 800 = €960,-
Omzet niuew = p x q = 1,40 x 600 = €840,-
Cons.surplus oud = 1/2 x 800 x 0,80 = €320,-
Cons.surplus nw = 1/2 x 600 x 0,6 = €180,-