A father's age is currently three times his son's age. In 12 years, the father will be twice as old as his son. How old is the son right now?
12 years old
Let S be the son's current age. The father is 3S. In 12 years, 3S + 12 = 2(S + 12). Solving 3S + 12 = 2S + 24 gives S = 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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