What is the difference between the average number of junior engineers and assistant engineers taking all the companies together ? 

What is the average number of junior engineers employed in all the companies ? 

The number of post graduate engineers employed in the company W is what per cent of the total engineers employed in that company ? 

What was the total production of wheat by these three states in the year 2007 ? (In quintals) 

 By what percent is the total production of wheat by three states in the years 2002,2003 and 2004 more or less than that In the years 2005. 2006 and 2007 ?

If the productions of wheat in Bihar in the years 2001,2002, 2003 and 2004 increase by 20%. 25%, 28% and 35% respectively: what will be the percentage increase in the average production of the state for the given years ?