Current location - Training Enrollment Network - Books and materials - Of all the books,
Of all the books,
Literature books+reference books+popular science books+reference books account for 2/5+4/5=6/5 of the total number of books.

Because literature books+reference books+popular science books are equal to the total number of books.

Reference books account for 6/5- 1= 1/5 of the total number of books.

Popular science books account for 4/5- 1/5=3/5 of the total number of books.

A: Popular science books account for 3/5 of the total number of books.