Simplest solution:

If a book is about 2 inches,

Then there are about 6 books per foot x 10 feet per shelf x 6 shelves

= **360 books!**

The librarian should be able to get 360 books on these 6 shelves which are 10 feet long. First you multiply 12 inches by 10 feet. That gives you 120 inches. Multiply 120 inches for each shelf by 6 because you have six shelves. This will give you a total capacity of 720 inches. Divide 720 inches by 2 inches which is the approximate size of the books. This will give you **360 books**.

**Further Reading**

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