H. E. Dudeney, Amusements in Mathematics (1917) No. 68 · Puzzles · Arithmetical puzzles
The Two Trains
I put this little question to a stationmaster, and his correct answer was so prompt that I am convinced there is no necessity to seek talented railway officials in America or elsewhere.
Two trains start at the same time, one from London to Liverpool, the other from Liverpool to London. If they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?
H. E. Dudeney, Amusements in Mathematics (1917) · No. 68
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