https://file.aiquickdraw.com/mathbot/file/17273114208770csyn1jo.jpg

Let's analyze the question step by step from the image:

1. **The Squirrel's Speed**:  
   - The squirrel can run 4 miles in 15 minutes.  
   - We need to convert this into miles per hour (mph). There are 60 minutes in an hour, so:
   \[
   \text{Speed of the squirrel} = 4 \, \text{miles} \times \frac{60 \, \text{minutes}}{15 \, \text{minutes}} = 4 \times 4 = 16 \, \text{mph}
   \]

2. **The Fox's Speed**:  
   - The fox can run 21 miles in half an hour.  
   - To get the speed in miles per hour:
   \[
   \text{Speed of the fox} = \frac{21 \, \text{miles}}{0.5 \, \text{hours}} = 42 \, \text{mph}
   \]

3. **Comparison of Speeds**:  
   - The fox runs at **42 mph**, while the squirrel runs at **16 mph**.  
   - The difference in their speeds is:
   \[
   42 \, \text{mph} - 16 \, \text{mph} = 26 \, \text{mph}
   \]

4. **Answer**:  
   The fox is faster, and it runs **26 mph** faster than the squirrel.

So the correct answer is not listed exactly, but based on the calculations, **the fox is faster and its speed difference is 26 mph**.

Would you like more details on any of the steps? Here are some related questions:

1. How do you convert minutes into hours when calculating speed?
2. What are other methods to calculate speed based on time and distance?
3. How would the speed change if the times were given in hours instead of minutes?
4. What if the distances were different—how would that affect the comparison?
5. What are other common units used in measuring speed besides miles per hour?

**Tip**: Always ensure that time units are consistent when calculating speed—convert everything to hours when working with miles per hour.

A squirrel can run a short distance at a rate of 4 miles in 15 minutes. A fox can run a short distance at a rate of 21 miles in half an hour. Which one is faster, and how much faster in miles per hour?

Learn how to compare speeds by calculating the miles per hour for a squirrel running 4 miles in 15 minutes and a fox running 21 miles in half an hour. Suitable for Grades 5-7.

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