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The weight of 72 books is 9 kg. What is ...

The weight of 72 books is 9 kg. What is the weight of 40 such books?

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To solve the problem step by step, we can follow these calculations: **Step 1: Find the weight of one book.** We know that the weight of 72 books is 9 kg. To find the weight of one book, we divide the total weight by the number of books. \[ \text{Weight of 1 book} = \frac{\text{Weight of 72 books}}{\text{Number of books}} = \frac{9 \text{ kg}}{72} ...
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