Here, we want to calculate the distance a car will travel, given that it traveled a certain distance is some given minutes and its speed is steady.
Since the speed of the car is steady, we will need to calculate the speed of the car from the distance and for the number of hours traveled;
Mathematically;
From the question, the distance traveled is 2 1/2 miles while the time taken to travel this distance is 3 1/2 minutes
The speed of the car is thus;