A mother is now 4 times as old as her son. In 8 years she will be 2 times as old as he will be. How old is the son now?

Answer and explanation

Correct answer: A. 4

  1. Step 1: Let the son be x years old, so the mother is 4x.
  2. Step 2: In 8 years: 4x + 8 = 2(x + 8), so 2x = 8 and x = 4.
Answer
4.
Why not the others: 12 is the son's age in 8 years and 16 is the mother's age now.

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