1.

5. The weight of 45 books is 9 kg.(1) What is the weight of 80 books.​

Answer»

Step-by-step explanation:

Weight of 45 books = 9kg

Weight of one book = kg/books

= 9/45 = 1/5

Weight of 80 books = 1/5 (80)

= 80/5

= 16 kg

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