The weight of 72 copies of a book is 56 kg. (i) What is the weight of 45 copies? (ii) How many copies will weigh 84 kg ?
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Step-by-step explanation:
(i) 72 copies of a book = 56 kg.
Therefore, 1 copy of the book = 56/72 kg = 0.777 kg
Therefore, 45 copies of the book = (56/72) * 45 = 35 kg
(ii) Let the copies of the book weighing 84 kg be 'x'
1 copy of the book = (56/72) kg
x copies of the book = 84 kg
x= 84/(56/72)
= 108 books
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Step-by-step explanation:
The weight of 72 copies of a book is 56 kg. (i) What is the weight of 45 copies? (ii) How many copies will weigh 84 kg ?
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