Question

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Answer 1

Answer:

72,10,5

Step-by-step explanation:

It's direct variation

if the number of children increases the number of notebooks will also increase and vice versa.

So 12 children will have (12×90)/15

=72 notebooks

So 60 notebooks will be given to (15×60)/90

= 10 children

So 30 notebooks will be given to (15×30)/90

= 5 children

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Answer 2

Answer:

children:15 and notebooks : 90

90/15= 6

children: 12 and notebooks:?

12×6 = 72.

children: ? and notebooks : 60

60/6 = 10.

children: ? and notebooks: 30

30/6 = 5.