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There are three times as many science and technology books as story books. The number of comic books is
The number of comics is the number of story books: 4× 3 =12;

Multiply the sum by the formula:

Story books are: 2400 ÷ (3+12+1) =150 (volume);

Science and technology tree: 150×3=450 (copies);

The comic book is: 450×4= 1800 (volume).

A: There are 450 science books, 150 story books and 1800 comic books.

So the answer is: 450, 150, 1800.