The following table gives demand and supply of steel for the years 2003 to 2008. Surplus is defined as ‘Supply - Demand’. Read the table and answer the questions.
The average supply of steel from 2003 to 2008= (49.2$$\ +\ $$52.8$$\ +\ $$50.1$$\ +\ $$31.9$$\ +\ $$30.8$$\ +\ $$60)$$\div$$6, which is equal to 45.8.