108 identical books have a mass of 30 kg.find
the mass of 150 sich books,
the number of such books that have a mass of 20 kg
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Answer:
Mass of 1 book = 30/108 = 5/18 kg.
Mass of 150 books = 150×5/18 kg =125/3 kg = 41.66 kg.
No of books that have mass 20 kg = 72 books because 1 kg is 3.6 books.
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