the weight of 72 books to 9 kg what is the weight of 40 such books
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Weight of 72 books = 9 kg
Then weight of 1 books = 9/72 = 1/8 kg
Weight of 40 books = 40 × Weight of 1 book = 40×1/8 = 5 kg
Then weight of 1 books = 9/72 = 1/8 kg
Weight of 40 books = 40 × Weight of 1 book = 40×1/8 = 5 kg
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