Final answer:
To find the distance from Sheffield to Peebles, we multiply the average speed of Sarah's drive, which was 60 mph, by the total time taken, which was 3.5 hours. This results in a total distance of 210 miles, making option D the correct answer.
Step-by-step explanation:
To calculate the distance from Sheffield to Peebles we will use the formula for average speed, which is given by the equation:
Distance = Average Speed × Time
In this case, Sarah drove for 3 hours and 30 minutes at an average speed of 60 mph. To work with a consistent unit (hours), we need to convert the 30 minutes into hours by dividing by 60:
30 minutes ÷ 60 minutes/hour = 0.5 hours
Now the total time in hours is:
3 hours + 0.5 hours = 3.5 hours
Applying the formula for distance:
Distance = 60 mph × 3.5 hours
Distance = 210 miles
The distance from Sheffield to Peebles is therefore 210 miles, which corresponds to answer D.