the weight of 56 books is 8 kg . what is the weight of 154 such books ? how many such books weight 5 kg ( using proportion method )
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Answer:
5000142.85=35
Step-by-step explanation:
Explanation: 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. If you want to buy 5 kg book, you need to get 5000142.85=35 books.
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