Answer:
Sally walks at a speed of 2 kilometers per hour.
Step-by-step explanation:
Given data
- Walked distance (d): 1/2 kilometer
- Elapsed time (t): 1/4 hour
We can find the speed (v) of Sally using the following expression
v = d/t = (1/2 km) / (1/4 h) = 2 km/h
Sally walks at a speed of 2 kilometers per hour.
