Two years ago, Alice was three times as old as Bob. In two years, Alice will be twice as old as Bob. How old is Alice today?
14 years old
Let A and B be current ages. (A - 2) = 3(B - 2) and (A + 2) = 2(B + 2). Solving these simultaneous equations yields B = 6 and A = 14.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Medium. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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