The weight of 72 books is 9 kg what is the weight of 40 such books?
The weight of 72 books is 9 kg what is the weight of 40 such books?
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The weight of 72 books = 9 kg
The weight of 1 book = 9/72 = 1/8
The weight of 40 books = 1/8 x 40 = 5 kg
Thus, the weight of 40 books is 5 kg
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