The following table shows the demand and supply schedules of pen drive for a month:

Price (RM)	Quantity demanded (units) Buyers Market		Quantity supplied (units) Sellers Market
	Individual Demand	Market Demand	Firm Supply	Market Supply
20	40		60
25	36		80
30	30		100
35	24		110
40	20		120
45	14		136

There are 50 buyers and 15 sellers in the pen drive market.

1. For each price, determine the market demand and market supply of pen drive. (4 m)

2. In one diagram, plot the market demand and the market supply curves for pen drive. (4 m)

3. What is the equilibrium price and quantity of pen drive in the market? (4 m)

4. At what prices does a shortage occur in the market and why? (4 m)

5. If the government fixed the price at RM25, what type of price control is this? Is there a shortage or surplus and by how much? (4 m)