Drawing a Joint Bar Graph

Directions: Study the bar graph provided below gives the sales of books (in thousands numbers) from six branches of a publishing company during two consecutive years$2000$ and $2001$. Answer the questions based on the graph


Total sales of branch B6 for both the years is what percent of the total sales of branch B3 for both the years ?

The following dual bar graph represents performance of Prateeksha in $1^{\mathrm{st}}$ term and $2^{\mathrm{nd}}$ term. In which subject the highest marks are scored in term $2$?

The graph that is drawn to compare two quantities having the same units is: