Răspuns :

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

     ⇒ a / c = 3 / 8b * 16b / 9 = 2 / 3

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