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There are 130 literature books in the school library, which is three times more than science books. How many science books and literature books are there in the libraries of 25 schools?
Solution: There are X scientific books in the school library.

3x+25= 130

3x= 130-25

3x= 105

x= 105÷3

x=35

Total number of science and technology books and literature books in the school library =130+x =130+35 =165.

A: The school library has 165 books on science and literature.

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