Multiple choice

Age of A and B differ from 2 years. A's father D is twice as old as A and B is twice as old as his sister C. The age of D and C differ by 40 years. The age of A is:

  1. 36 years

  2. 32 years

  3. 28 years

  4. 26 years
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let A's age be x. Then B is x±2 (differ by 2). D=2A=2x. B=2C so C=B/2. Given D-C=40: 2x - (x±2)/2 = 40. Solving gives x=26. Check: D=52, C=12, B=24. D-C=40 and A-B=2.

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