But I can't thank you by asking a question because I don't know how to ask a question in this app more than one . so I was just serching for it but didn't got the answer so it was a little late ( sorry ) . So just for thanking you I answered this question so sorry for it.
Please delete this answer because this is not the answer to your question.
Answers & Comments
Answer:
weight of 72 books=9kg
weight of 1 book=9/72
therefore weight of 40 books=9/72×40=5kg
Answer:
Hi Army
Step-by-step explanation:
Thank you for Thanking my answers .
But I can't thank you by asking a question because I don't know how to ask a question in this app more than one . so I was just serching for it but didn't got the answer so it was a little late ( sorry ) . So just for thanking you I answered this question so sorry for it.
Please delete this answer because this is not the answer to your question.
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