A father is currently three times as old as his daughter. In 12 years, he will be twice as old as she is. How old is the daughter right now?
12
Let d be the daughter's current age. The father is 3d. In 12 years, (3d + 12) = 2(d + 12). Solving 3d + 12 = 2d + 24 yields d = 12.
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: Easy. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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