Math, asked by shweta2199, 9 months ago

Please answer !!! step by step

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Answered by vermasangeeta006

2

Answer:

The weight of 72 books is 9kg

Let the weight of 40 books is x

72:40::9:x

72x=40×9

72x=360

x=360/72

x= 5

Answered by Anonymous

0

Answer:

x=5................

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