hours?
2. The weight of 56 books is 8 kg. What is the weight of 112 such books? How many such books weigh
5 kg?
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Answer:
If a set of 56 books weighs 8000 grams, you can get average weight of a book, which is 800056=142.86 grams. Now you can compute weights of 152 books =152⋅142.86=21715 grams or approximately 21.7 kg
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