Answer:
12 containers.
Step-by-step explanation:
Given:
She made 36 cupcakes and 48 cookies.
Question asked:
What's the greatest number of containers she can pack them in and have the same amount in each container with no leftovers?
Solution:
Total number of cupcakes = 36
Total number of cookies = 48
As we have to calculate the greatest number of containers with same amount of cupcakes and cookies in each container,<u> we will find the Highest Common Factor of 48 and 36.</u>
Factors of 36 = 1, 2, 3, 4, 6, 9, <u>12</u>, 18, 36
Factors of 48 = 1, 2, 3, 4, 6, 8, <u>12</u>, 16, 24, 48
<u>Highest Common Factors = 12</u>

That means 12 containers (maximum containers) can be filled with 3 cupcakes and 4 cookies equally in each container.
Therefore, the greatest number of containers is 12.