To find the unit rate (plates per stack), you need to divide the total number of plates by the number of stacks.
Given:
- Total plates = 48
- Total stacks = 8
Now, calculate the unit rate:
\[ \text{Plates per stack} = \frac{\text{Total plates}}{\text{Total stacks}} = \frac{48}{8} = 6 \]
So, there are 6 plates per stack.