72 books weigh 8 Kg . what is the weight of 81 such books? how many such books will weigh 6 Kg?
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Answered by
4
Books. 72 ?
Weight. 8 6
This is case of direct variation
:. 72×6/8
=9×6=54
Therefore 54 books will weigh 6 kg
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Weight. 8 6
This is case of direct variation
:. 72×6/8
=9×6=54
Therefore 54 books will weigh 6 kg
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Answered by
1
Answer:
54
Step-by-step explanation:
weight of 72 books=8 kg
weight of 1 book =8\72
weight of 81 such books = 8\72multiply by 81 =9 kg
number of books with a weight of 9 kg = 81
number of books that will weigh 6 kg = 81\9 multiplied by 6 = 54
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