Current location - Training Enrollment Network - Books and materials - There are 72 kinds of books on the class bookshelf, and the ratio of story books to science books is 7: 5. How many story books and science books are there respectively?
There are 72 kinds of books on the class bookshelf, and the ratio of story books to science books is 7: 5. How many story books and science books are there respectively?
72×77+5=42 (Ben)

72×57+5=30 (Ben)

A: There are 42 story books and 30 science books.