To solve the problem, let's determine how fast Danielle needs to walk:
1. Understanding the Given Information:
- Distance to be walked: 4 miles
- Time available: 50 minutes
2. Convert Time from Minutes to Hours:
- We know there are 60 minutes in an hour.
- Time in hours is calculated by dividing the time in minutes by the number of minutes in an hour:
[tex]\[
\text{Time in hours} = \frac{50 \text{ minutes}}{60 \text{ minutes/hour}} = \frac{5}{6} \text{ hours} \approx 0.8333 \text{ hours}
\][/tex]
3. Calculate the Required Speed:
- Speed is calculated by dividing the distance by the time taken to cover that distance.
- Using the given numbers:
[tex]\[
\text{Speed} = \frac{\text{Distance (miles)}}{\text{Time (hours)}} = \frac{4 \text{ miles}}{0.8333 \text{ hours}} \approx 4.8 \text{ miles/hour}
\][/tex]
Based on the detailed steps above, Danielle needs to walk at a speed of approximately 4.8 miles per hour in order to cover 4 miles in 50 minutes.
Thus, the correct answer is:
C. 4.8 miles per hour
