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Sarah is twice as old as her youngest brother. If the difference between their ages is 15 years, how old is her youngest brother?
  1. 15
  2. 20
  3. 25
  4. None of these
Explanation

Let youngest brother = x

Sarah = 2x

Difference = 2x - x = 15

x = 15 years

So brother is 15, Sarah is 30.


Last verified on 20-10-2026

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