To calculate Stacey's average running speed, we need to consider the total distance traveled and the total time taken for both walking and running.
Stacey walked for 45 minutes at a speed of 3 km/h, so the distance covered during walking is:
Distance = Speed x Time
Distance = 3 km/h x 45 minutes = 3 km/h x 0.75 hour = 2.25 km
The remaining distance to cover is:
Total distance - Distance covered during walking = 6 km - 2.25 km = 3.75 km
Stacey ran for half an hour at a certain speed, so the average running speed is:
Speed = Distance / Time
Speed = 3.75 km / 0.5 hour = 7.5 km/h
Therefore, Stacey's average running speed is 7.5 km/h.
Stacey walks at an average speed of 3 km/h for 45 minutes before running for half an hour at a certain average speed if she travels a total distance of 6 km calculate her average running speed
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