Question

please send answer of this question click on the photo it will look clear​

Answer 1

Answer:

72 books = 9 kg

1 book = 9/72 kg

80 books = 9x80/72 which is 10 kg

So, it will weigh 10 kg

Answer 2

Answer:

The weight of 72 books = 9 kg

Weight of 1 book = 9/72 = 1/8 kg

So, the weight of 80 books = 80*1/8 = 10 kg