The following table gives demand and supply of cement, in million tons, for the period 2005 to 2010. Surplus is defined as excess of supply over demand. Read the table and answer the Questions.
The average supply for 2005 to 2010 = $$\frac{48.2+48.3+51.2+54.2+60+62.4}{6}=54.05$$. The annual supply for 2008, 2009 and 2010 is greater than the average i.e. for 3 years.
