The bar graph given below shows the sales of books (in thousands) from six branches (B1, B2, B3, B4, B5, and B6) of a publishing company during 2011 and 2012: 
What is the ratio of the total sales of branch B2 for both years to the total sales of branch B4 for both years?
সমাধান
সঠিক উত্তর: Option D
The request ratio =total sales of B2:B4
=(75+65):(85+95)
= 7:9
