To find out how much the amount of water in the canteen should change every 10 minutes, we first need to determine how much water is consumed in that time frame.
Given that hikers should drink 24 ounces of water in one hour (60 minutes), we can calculate the rate of water consumption per minute:
\[ \text{Rate per minute} = \frac{24 \text{ ounces}}{60 \text{ minutes}} = 0.4 \text{ ounces per minute} \]
Now, we need to find out how much water is consumed in 10 minutes:
\[ \text{Water consumed in 10 minutes} = 0.4 \text{ ounces/minute} \times 10 \text{ minutes} = 4 \text{ ounces} \]
Since the hiker is consuming water, the amount of water in the canteen decreases. Therefore, the change in the amount of water in the canteen every 10 minutes is:
\[ -4 \text{ ounces} \]
The correct response is:
−4 ounces (negative 4 ounces)
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