Answer: 2 cakes and 2 slices of an extra ( assuming its cut into 10 slices)
Explanation:
11 divided by 5 is equal to 2.2
in this case, 11 cakes divided by 5 friends is equal to 2 cakes and 2 slices.
normally you would just give them 2 cakes each (if you had 10 cakes) but you have 1 left over. So unless Sako wanted a cake as well, that's the answer(if she did, it would only be 2 cakes, no extra slices).