ArithmeticQuestion 365 of 550

Sara is twice as old as Noora. Three years ago Sara was three times as old as Noora. How old is Noora now?

  1. 3 years
  2. 9 years
  3. 6 years
  4. 12 years
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Correct answer: 6 years

Let Noora's age be x. Sara's age is 2x. Three years ago: 2x − 3 = 3(x − 3) = 3x − 9. So x = 6.

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Questions last reviewed: 21 October 2026