In the following bar diagram the number of engineers employed in various companies has been given. Study the bar diagram carefully to answer the questions.
The number of post graduate engineers employed in the company W is what percent of the total engineers employed in that company ?
What is the average number of junior engineers employed in all the companies ?
What is the difference between the average number of junior engineers and assistant engineers taking all the companies together ?
If the number of assistant engineers employed in all the companies be increased by37% and the number of post graduate engineers employed in all the companies be decreased by 20%, by what per cent will the number of assistant engineers be less than that of post graduate engineers ?
If the number of all the engineers in the company V, company X and company Y be increased by 30%, 35% and 40% respectively, what will be the overall percentage increase in the number of all engineers of all the companies taken together ?