Dog II
The journey from a ranger's home to the town is 6 km. Mr. Ranger started from his home and went 3 km per hour. His women came from the town and also went 3 km per hour. The ranger starts the dog and runs in 12 km in 1 hour. The dog goes to the ranger's woman, then back to the ranger, and runs from one to the other until the two meet. How many miles will a dog go?
Correct answer:
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