Math, asked by THARUN99, 1 year ago

the weight of 72 books is 9 kg how many books are needed to weigh 80 kg

Answers

Answered by Anonymous

3

9kg=9000gm

weight of 1 book=9000/72=125gm

weight of 80 books=80×125=10000gm=10kg

THARUN99: thanks

Anonymous: wlcm

Answered by preettripathi

1

By unitary method....

If 9 kg............72 books

then 80 kg............72/9*80 books

So...640 books weighs to 80 kg

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