A man walks at 5 km/h for 2 hours and then runs at 10 km/h for 3 hours. What is his average speed?
A7.0 km/h
B8.0 km/h
C8.5 km/h
D9.0 km/h
Explanation
Total distance = (5*2) + (10*3) = 10 + 30 = 40 km. Total time = 2 + 3 = 5 hours. Average speed = 40 / 5 = 8 km/h.
Exam Relevance
- Topic: Speed, Time & Distance
- Subtopic: Average Speed
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