Question

The weight of 81 books is 9 kg .What is the weight of 88 such books ?

Answer 1

9.77777777768kg

Explanation:

81 books= 9kg

so, one book= 9/81= 0.11111111111111

Therefore, 88 books(88x0.1111111)

Answer: 9.77777777768kg

Answer 2

Explanation:

9/81= kg per book= 1/9 kg

88 books weigh 1/9*88=88/9 kg = 9.77 kg