The weight of 72 Books is 9 kg.(a) Find the weight of 80 such Books. (b) How many Books will weigh 6 kg?
Given,
The weight of 72 Books = 9 kg.
This implies,
The weight of 1 Book = $\frac{9}{72}$ kg = $\frac{1}{8}$ kg
(a) The weight of 80 such Books = $80\times\frac{1}{8}$ kg = $10$ kg.
The weight of 72 Books = 9 kg.
This implies,
Number of books required to weigh 1 kg = $\frac{72}{9}=8$
(b) Number of books required to weigh 6 kg = $6\times8=48$.
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