Henry Ernest Dudeney/Modern Puzzles/46 - Baxter's Dog
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Modern Puzzles by Henry Ernest Dudeney: $46$
- Baxter's Dog
- This is an interesting companion to the "Man and Dog" puzzle.
- Anderson set off from an hotel at San Remo at nine o'clock and had been walking an hour when Baxter went after him along the same road.
- Baxter's dog started at the same time as his master and ran uniformly forwards and backwards between him and Anderson until the two men were together.
- Anderson's speed is $2$, Baxter's $4$, and the dog's $10$ miles an hour.
- How far had the dog run when Baxter overtook Anderson?
- My correspondent in Italy who sends me this is an exact man, and he says,
- "Neglect the length of dog and time spent in turning."
- I will merely add, neglect also the dog's name and the day of the month.
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Sources
- 1926: Henry Ernest Dudeney: Modern Puzzles ... (previous) ... (next): Arithmetical and Algebraical Problems: Locomotion and Speed Puzzles: $46$. -- Baxter's Dog
- 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Speed & Distance Puzzles: $74$. Baxter's Dog