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Brief introduction table of book equipment
(1) Fill in the form as follows:

12×3=36 (yuan);

12×5=60 (yuan);

12×7=84 (yuan);

Quantity/copy 1 2 3 5 7 total price/yuan 1 24 36 60 84 (2) Output statistics are as follows:

(3) The total price of Story King is directly proportional to the number of copies.

Because the total purchase price and the number of copies are two related quantities, the ratio of the total purchase price to the number of copies is certain, that is, the unit price is certain (12 yuan).

Therefore, the total price of the story king is directly proportional to the number of copies.

(4) As can be seen from the picture, it takes 48 yuan to buy four copies of Story King; 72 yuan can buy six copies of The Story King.

So the answers are: 36, 60, 84, 48 and 6.

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