Taken from Project Gutenberg’s Amusements in Mathematics, by Henry Ernest Dudeney, originally published ca. 1917 … #68 — “The Two Trains” …
Two trains start at the same time, one from Baltimore to Philadelphia, the other from Philadelphia to Baltimore. If each train is traveling at a constant speed and the trains arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?
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