To determine how many gallons per minute leak out of container B based on the given points on the graph, we can calculate the rate of leakage using the two points provided.
The two points are:
- (25 minutes, 400 gallons)
- (50 minutes, 100 gallons)
First, we calculate the change in volume and the change in time.
Change in volume:
- From 400 gallons to 100 gallons, the change in volume is: \[ 400 - 100 = 300 \text{ gallons} \]
Change in time:
- From 25 minutes to 50 minutes, the change in time is: \[ 50 - 25 = 25 \text{ minutes} \]
Rate of leakage:
- To find the rate of leakage (gallons per minute), we divide the change in volume by the change in time: \[ \text{Rate} = \frac{\text{Change in volume}}{\text{Change in time}} = \frac{300 \text{ gallons}}{25 \text{ minutes}} = 12 \text{ gallons per minute} \]
Therefore, the leakage rate from container B is 12 gallons per minute.