Start with finding the total of chocolates.
3 bags of 12 chocolates equals 36 chocolates in all.
Next, you can find the amount of candies that are chocolates by using the fraction 3/4. 3/4 times 36/1 = 27 candies are chocolates. ( 36 x 3 =108, 108/4=27). Now you can find the amount of candies that are not chocolate by subtracting 36-27=9. 9 candies are not chocolate.