The weight of 72 books is nine kg.
a. What is the weight of 48 such books?
b. How many books will weigh 2.5kg?
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Answer:
a. 6 kg
explanation- 72 books- 9 kg
1 book-9/72 kg
48 books-9/72×48 kg= 6 kg
b.20 books
explanation- 9 kg-72 books
1 kg 72/9=8 books
2.5 kg =8×2.5=20 books.
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