Question

weight of 72 books is 9 kg how many such books weight 6 kg
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Answer 1

Weight of 72 books=9kg

Therefore, weight of 1 book=72/9=8 kg

Therefore, weight of 6 books=8×6=48kg

Hence, the weight of 6 books is 48kg

Answer 2

hey!! first of all use mass.... don't use weight... coz. weight=mass*gravity....

mass of 72 books=9 kg

to find: mass of x books=6kg;x=??

9/6=72/x

3/2=72/x

x=72*2/3

x=48

☺hope it helps!!☺

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