Răspuns :
a/c = (3/(8b))/(9/(16b)) = (3*16b)/(9*(8b)) = (1*2)/(3*1) = 2/3
a * b = 3 / 8 ⇒ a = 3 / 8b
b * c = 9 / 16 ⇒c = 9 / 16b
⇒ a / c = 3 / 8b * 16b / 9 = 2 / 3
b * c = 9 / 16 ⇒c = 9 / 16b
⇒ a / c = 3 / 8b * 16b / 9 = 2 / 3