The number of Academic books published by Company E is what percent less than the number of Non-Academic books published by the same company ?

The number of Nexus mobile phones sold by each store increased by 15% from 2008 to 2009, and the number of Apple mobile phones sold by each store increased by 10% from 2008 to 2009, what was the total number of Nexus and Apple mobile phones sold by stores B and E together in 2009?

If the price of each BlackBerry mobile is INR 22,000/-price of each Nexus mobile is INR 25,000/-and the price of each Apple mobile is INR 28,000/- by what percent are the total sales of store F more than the total sales of store D ? (rounded off to nearest integer)

What is the difference between number of mobile phones of all three brands sold by stores F and B ?

Average number of Nexus mobile phones sold by all the given stores together is by what percent more than the number of BlackBerry mobile phones sold by all the given stores together ?

What is the respective ratio between total number of BlackBerry mobile phones sold by stores C,D and G together and the total number of Apple mobile phones sold by the same store together ?