5. The weight of 45 books is 9 kg. (i) What is the weight of 80 books. (ii) How many books will weight 10.8 kg. pls give full answer with sentence.
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Answer:
16 kg,54 books
Step-by-step explanation:
weight of 45 books =9 kg
weight of 1 book=9/45 kg
hence, weight of 80 books=9/45*80 kg=16 kg
also, 9 kg is weight of 45 books
i.e, 1 kg is weight of 45/9 books
hence,10.8 kg is weight of 45/9*10.8 books=54 books.
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