To find the rate in gallons per minute, you need to divide the total amount of water by the total time in minutes.
Given:
- Total water = 45 gallons
- Total time = 9 minutes
The rate in gallons per minute is calculated as follows:
\[ \text{Rate} = \frac{\text{Total Water}}{\text{Total Time}} = \frac{45 \text{ gallons}}{9 \text{ minutes}} = 5 \text{ gallons per minute} \]
So, the rate is 5 gallons per minute.