Current location - Training Enrollment Network - Books and materials - The school bought a batch of books, including 720 story books, more than science books 1/8. How many science books are there?
The school bought a batch of books, including 720 story books, more than science books 1/8. How many science books are there?
720/( 1+ 1/8)=640 (Ben)
Compared with others, who is the unit "1", more than science books 1/8, that is, the number of science books is regarded as the unit "1", and the number of story books is equivalent to 1+ 1/8=9/8.