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Q.8 The weight of 72 books is 9 kg. What is the weight of 40 such books?


Answer :

Weight of 72 books = 9 kg
Weight of 1 book = \(\frac{9}{72} = \frac{1}{8} \)
So, weight of 40 books = \(\frac{1}{8} \) × 40 = 5 kg
\(\therefore \)Weight of 40 books is 5 kg

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