ENVE Urban Systems Practice Exam

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COVID-19 lockdown effects: People in ~200 countries walked 27% fewer steps after lockdown. Which option reflects this change?

15% fewer steps 5% fewer steps 0% change 27% fewer steps

Correct Answer:

27% fewer steps

Explanation:

This question focuses on interpreting percent change relative to a baseline. When it says people walked 27% fewer steps after lockdown, it means the average steps dropped by 27% compared with what they walked before lockdown. That exact figure matches the described effect, so it’s the best choice. For context, if the pre-lockdown average was 10,000 steps, the post-lockdown average would be 10,000 × (1 − 0.27) = 7,300 steps. The other options describe smaller decreases or no change, which do not reflect the reported 27% drop.

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