Final answer:
To calculate Charlie's average speed for running 8 km in 0.2 hours, divide the distance by the time, resulting in an average speed of 40 km/h.
Step-by-step explanation:
To calculate the average speed of Charlie who runs to the store 8 km away in 0.2 hours, you can use the formula for average speed, which is the total distance traveled divided by the total time taken. Using the formula:
Average speed = Total distance / Total time
In this case, the distance that Charlie runs to the store is 8 km, and the time taken is 0.2 hours. Therefore, Charlie's average speed can be calculated as follows:
Average speed = 8 km / 0.2 hours = 40 km/h
So, Charlie's average speed is 40 kilometers per hour (km/h).