Question

The weight of 72 books is 9 kg


a) Find the weight of 80 such books ​

Answer 1

Step-by-step explanation:

Weight of 72 books=9 kg

Weight of 1 book=72÷9=8kg

Weight of 80 books=80×8=160kg

Answer 2

Answer:

10 kg

Step-by-step explanation:

Because :-

1) we take weight of 1 book by dividing 72/9 = 8

2) as we found that weight of 8 books is 1 kg.

3) now ➗ 80 / 8 = 10

So that weight of 80 books is 10 kg