Friday, February 09, 2001

Puzzle: A boy, a girl, and a dog all start out at the same point on a straight road. The boy walks at a pace of 50 ft/min, the girl walks at 30 ft/min, and the dog runs between them at a rate of 80 feet/min. Assume that the dog can turn around instanteously. So, they start off all at the same point, and shortly thereafter, the boy is ahead of the girl, with the dog in between them. So, the question is, after 10 minutes, where is the dog, and what direction is he facing? Can you answer this for t minutes?

Give it a try.

Girl       Dog   Boy

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