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1. |
A person goes from one point to another point with a speed of 5 km/h and comes back to starting point with a speed of 3 km/h. Find the average speed for the whole journey.? |
A. | 4.5 km/h |
B. | 4 km/h |
C. | 25 km/h |
D. | 75 km/h |
Answer» E. | |