There are 400 books and story books in the corner of the classroom, and 36 books are more than seven times as many as science and technology books. How many science and technology books are there?
Suppose there are X science books, then there are (7x+36) story books.
x+7x+36=400
8x=400-36
8x=464
x=58
A: There are 58 science and technology books.
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