11
Explanation:
Total number of people to attend the dance = 55
Number of slice per person = 1
Number of cakes = 5
To get the number of slices per cake, we will divide total number of people to attend the dance by number of cakes:
[tex]\begin{gathered} Numberofslicesperccake=\frac{55}{5} \\ \text{Number of slices per cake = 11} \end{gathered}[/tex]The slices per cake you should cut is 11