Question

the weight of 72 books to 9 kg what is the weight of 40 such books

Answer 1

Weight of 72 books = 9 kg

Then weight of 1 books = 9/72 = 1/8 kg

Weight of 40 books = 40 × Weight of 1 book = 40×1/8 = 5 kg

Answer 2

Answer:

I hope it is helpful.....................