The weight of 72 books is 9 kg. What is the weight of 40 such books
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Answer:
The weight of 40 such books is 5 kg.
Step-by-step explanation:
weight of 72 books = 9kg
weight of 1 book = 9/72 = 1/8kg
Therefore,
weight of 40 books = 1/8×40 = 5kg
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