108 identical booms have a mass of 30 kg. The number of such books that have a mass of 20 kg in. Answer the question in unitary method
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Answer:
72 books
Step-by-step explanation:
Number of books weighing 30 kg=108
Number of books in 1 kg= 108/30
Therefore number of books in 20 kg= 108/30 × 20=3.6×20=72 books
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