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The ratio of comic books to science books in the corner of the book is 5:6. 220 books in two categories, and how many books in science and technology?
Hello:

Solution: Suppose there are 5x comics.

Then there are 6x science and technology books.

List the equations according to the meaning of the question.

5x+6x=220

1 1x=220

x=20

6x=20×6= 120

A: Science and technology books 120.