Walking at 5 km/h, a man reaches his office 10 minutes late. Walking at 6 km/h, he reaches 5 minutes early. What is the distance to his office (in km)?
A. 5
B. 7.5
C. 9
D. 6
1 answer
Best answer
Answer: B. 7.5
Answer: (B) 7.5
The time difference is 15 min = 1/4 h. \( \frac{d}{5} - \frac{d}{6} = \frac{d}{30} = \frac14 \), so d = 7.5 km.
Doubtly AI
· 27 Oct 2026
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