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The weight of 72 books is 9 kg.what is the weight of 80 such books? How many such books would weigh 6kg?
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The weight of 72 books is 9 kg.what is the weight of 80 such books? How many such books would weigh 6kg?

User Ankon
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9 divided by 72 = 0.125
0.125 is the weight of one book
0.125 times 80 = 10kg.
So 80 books weight 10kg.
72 divided by 9 = 8 books make up 1 kg.
8 times 6 =48
User Nicolas Defranoux
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