Respuesta :
Find the weight of one book and multiply by ten.
13.5 / 6 = 2.25
2.25 * 10 = 22.5
13.5 / 6 = 2.25
2.25 * 10 = 22.5
the answer is 22.5 because 13.5 divided by 6 is 2.25 which is the weight of one book so you multiply that by 10 and you get 22.5 the weight of 10 books