The following table shows the demand and supply schedules for compact discs (CD) for a month.

. The following schedule show the demand and supply for a product. . Schedule 1: Demand and individual consumers . Schedule 2: Supply from individual producers Schedule I Schedule 2 Price Consumer Consumer Consumer Price Producer X Y Producer Z Producer A B 10 C 40 40 60 10 20 20 20 20 35 35 50 20 25 30 30 25 30 30 40 30 30 40 40 30 25 25 30 40 35 50 50 35 20 20 20 50 40 60 60 40 15 15 10 60 45 70 70 45 10 10 0 70 50 80 80 50 0 0 O 80 55 90 55The following table shows the demand and supply schedules for compact discs (CD) for a month. Price (RM) Quantity demanded (units) Quantity supplied (units) Household Market demand Individual supply Market supply demand 2.00 20 30 2.50 18 40 3.00 15 50 3.50 12 55 4.00 10 60 4.50 7 68 There are 50 households purchasing and 15 sellers selling the CDs in the market