Question

Alice walks to the McDonald's next to her house, which is 3000 meters from her house. It usually takes her 1,500 seconds to walk. How fast is she walking?

a) Alice is walking at 2 meters per second.
b) Alice is walking at 0.5 meters per second.
c) Alice is walking at 4 meters per second.
d) Alice is walking at 1 meter per second.

Answer 1

Alice's walking speed is calculated by dividing the distance she walks to McDonald's, which is 3000 meters, by the time it takes her, which is 1500 seconds, resulting in a walking speed of 2 meters per second (option a).

Step-by-step explanation:

To calculate Alice's walking speed, we use the formula: speed = distance ÷ time.

In this case, Alice's walking distance to McDonald's is 3000 meters, and it takes her 1500 seconds to walk this distance. Therefore, her speed is 3000 meters ÷ 1500 seconds = 2 meters per second. So, Alice is walking at 2 meters per second, which means the correct answer is (a).

To ensure the answer is correct and reasonable, we can consider that a brisk walk is typically around 2.5 to 3 m/s, so 2 m/s for a walking speed is reasonable, especially if Alice is walking at a leisurely pace.