Question

a pile of 12 books is 1.2 meter thick 9 of them are 9.5 centimeters thick each and the rest are of equal thickness. for the rest of the books, how thick is each of them in centimeter?

Answer 1

11.5cm

Explanation:

1.2 meters = 120 centimeters

(for the 9 of them, with each being 9.5cm) = 9 * 9.5

=85.5cm

(For The rest of the remaining 3 books): 120cm - 85.5cm

=34.5cm

Each of them would be 34.5 / 3

=11.5cm