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From A to D is a puzzle in Professor Layton and the Unwound Future.
Puzzle
- US Version
It takes 15 minutes to travel from station A, the first stop on the line, to station B.
It takes five minutes to travel from station B to station C.
It takes 10 minutes to travel from station C to the last station, station D.
However, it doesn't take 30 minutes to travel from station A to station D. Given that this is a straight railway line with no branches, how many minutes does it take to travel from A to D?
- UK Version
It takes 15 minutes to travel from station A, the first stop on the line, to station B.
It takes five minutes to travel from station B to station C.
It takes 10 minutes to travel from station C to the last stop on the line, station D.
However, it does not take 30 minutes to travel from station A to station D.
Given that this is a straight railway line with no branches, how many minutes does it take to go from station A to station D?
Hints
Solution
Incorrect
Too bad!
- US Version
Try switching up your thought process.
- UK Version
Try altering your thought process.
Correct
Choo choo!
Twenty minutes is correct!
To meet the conditions of this puzzle, station C must be located between station A and station B.
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