Two trains leave stations 300 miles apart at the same instant heading toward each other. Train A travels at 60 mph and Train B travels at 40 mph. How many hours will pass before they meet?
3 hours
Their combined closing speed is 60 + 40 = 100 mph. Distance / combined speed = 300 / 100 = 3 hours.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Hard. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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