Following bar graph shows the sales of books (in thousand number) from Five branches of a publishing company during two consecutive years 2010 and 2011.

What is the ratio of total sale of branch $B_2$ for both year to the total sale of branch $B_4$ for both year?

Following bar graph shows the sales of books (in thousand number) from Five branches of a publishing company during two consecutive years 2010 and 2011.

What is the average sales of all the branches (in thousand numbers) for the year of 2010?

Following bar graph shows the income and expenditure (in ₹ lakhs) of a company. Read the graph carefully and answer the questions.

What is the average income of the company over the years?

Following bar graph shows the income and expenditure (in ₹ lakhs) of a company. Read the graph carefully and answer the questions.

Which of the following pairs of years, shows the equal expenditure of the company?