The number of times scientific books were sold compared to mystery books is 1000 times or one thousand times.
The numbers provided to represent the number of copies that were sold from each book are given in scientific notation. In this type of notation, the exponent represents the number of zeros. Based on this principle, the number of books sold from each type is:
To find out this, simply divide the number of science fiction book copies into the number of mystery book copies:
Learn more about scientific notation in: https://brainly.com/question/18073768
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