Answer: The average speed while walking is 12 km/hr.
Step-by-step explanation:
Average speed is defined as the ratio of total distance traveled to the total time taken.
To calculate the average speed while walking, we use the equation:
We are given:
Distance from school to home = 5 km
Time taken = 25 mins = 0.417 hr (Conversion factor: 1 min = 60 sec)
Putting values in above equation, we get:
Hence, the average speed while walking is 12 km/hr.