Let there be three groups of buyers with inverse demand functions given as below. P = 10 - q1 Inverse demand for group I. There are 20 members in the group. P = 20 - 0.5q2 Inverse demand for group II. There are 40 members in the group. P = 30 - 2q3 Inverse demand for group III. There are 50 members in the group. Find the market demand and draw graph to show the demand curve. Let there be two groups of sellers with the inverse supply function. P = 2 + q1 Inverse supply for group I. There are 25 firms in the group. P = 1 + 0.5q2 Inverse supply for group II. There are 50 firms in the group. Find the market supply and draw graph to show the supply curve. Also find the market equilibrium. Hint: It is helpful to first change the inverse demand and inverse supply to demand and supply functions respectively