Question

if 84 books weight is 12kg then what is the weight of such35 books​

Answer 1

if 84 books weight 12 kg

then 1 book weigh=12/84

=>1/7

than 35 books weight=1/7*35

5 kg is the answer

Answer 2

Given weight of 84 books=12kg

1 book=12/84

35 books =12/84×35=5

Hence weight of books will be 5 kg