Jerry had 2 action figures and 10 books on a shelf in his room. Later he added 4 more action figures to the shelf. How many more books than action figures were on his shelf?
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Jerry had 2 action figures and 10 books on a shelf in his room. 

Later he added 4 more action figures to the shelf. 

Now he has 2 + 4 = 6 action figures and 10 books. 

So he has 4 more books than action figures.