Maths A person travels 72 km from city A to city B by car. He travels at an hourly speed, he returns from city b to a at a speed of 48 km per hour, what is his average speed for the whole journey?
| Q.201602: A person travels 72 km from city A to city B by car. He travels at an hourly speed, he returns from city b to a at a speed of 48 km per hour, what is his average speed for the whole journey? |
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