Answer:
90 meters/second = rate
Explanation:
To find out how fast he ran, we use the equation
distance = rate * time
We know the distance = 270 meters
and we know the time = 3 seconds
Substitute these values in
270 meters = rate * 3 seconds
Divide both sides by 3 seconds
270 meters / 3 seconds = rate
90 meters/second = rate