The demand curve for a product is given by q 80 2p and the
     The demand curve for a product is given by q = 80 - 2p and the supply curve is given by q = 3p - 60. Enter the exert answers. Find the consumer surplus at the equilibrium. Consumer surplus = Find the producer surplus at the equilibrium. Producer surplus = 
  
  Solution
Here is the way to do it:
q = 80-2p
 q=3p-60
a) At equilibrium, the q is ?
Equate the demand and supply:
80-2p =3p-60
140=5p
 5p=140
 p=28
a) Conumer surplus = 80-2p = 80-2(28) = 24
b) Producer surplus:=3p-60 = 3(28)-60 = 24

