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The school distributed 4 14 books to three classes in grade six. The number of books in Class Two is 2: 3 and the number of books in Class Two is 5: 7. How stupid is each class?
Class 1: Class 2 = 2: 3 = 10: 15.

Category 3: Category 2 = 7: 5 = 2 1: 15.

1 class: class 2: class 3 = 10: 15: 2 1.

Each copy: 414/(10+15+21) = 9 (Ben)

Class 1: 9x 10=90 (Ben)

Category 2: 9x 15= 135 (Ben)

Category III: 9x2 1= 189 (Ben)

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