To find the unit rate of newspapers per pile, you can divide the total number of newspapers by the number of piles.
Given:
- Total newspapers = 36
- Total piles = 4
Now calculate the unit rate:
\[ \text{Unit Rate} = \frac{\text{Total Newspapers}}{\text{Total Piles}} = \frac{36}{4} = 9 \]
So, there are 9 newspapers per pile.