A cyclist rides to a village at 30 km/h and returns by the same road at 60 km/h. What is the average speed for the whole trip?
Answer and explanation
Correct answer: C. 40 km/h
- Step 1: For a distance each way the total time is , so the average speed is divided by that time, km/h. Answer: 40 km/h. Why not the others: 45 km/h, 18 km/h and 30 km/h don't fit.
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