Answer:
If the pet store had 1/9 of a bag of cat food, and they want to divide it equally between 4 cats, then each cat would get 1/9 of the bag divided by 4.
So, each cat would get:
1/9 ÷ 4 = 1/9 * 1/4 = 1/36
So, each cat would get 1/36 of the bag of cat food.