Time, Speed & Distance · Question 7 · Medium
If Anjali walks to school at 4 km/h she is 10 minutes late, but at 5 km/h she is 5 minutes early. How far is her school?
- 6 km
- 5 km
- 4 km
- 2.5 km
Answer and explanation
Answer: B. 5 km
Explanation: The difference in times is 15 minutes = 1/4 hour. So d/4 − d/5 = 1/4, i.e. d/20 = 1/4, giving d = 5 km.
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