Final answer:
To find the distance traveled by Sarah, we multiply the distance she can run in 10 minutes (25 meters) by the number of 10-minute intervals in 30 minutes (3). Sarah has traveled a total distance of 75 meters.
Step-by-step explanation:
The student's question asks about the distance traveled by Sarah if she can run 25 meters in 10 minutes and has run for 30 minutes. To solve this, we use the concept of proportionality and unit conversion within the realm of speed and velocity.
We first need to determine how many 10-minute intervals there are in 30 minutes. There are 3 such intervals (30 minutes ÷ 10 minutes per interval). Since Sarah can run 25 meters in each 10-minute interval, we multiply the distance she covers in one interval by the number of intervals to find the total distance:
25 meters/interval × 3 intervals = 75 meters
Thus, Sarah would have traveled 75 meters in 30 minutes.