Multiple choice general knowledge math & puzzles

John’s father is 5 times older than John and John is twice as old as his sister Alice. In two years time, the sum of their ages will be 58. How old is John now?

  1. 8

  2. 7

  3. 6

  4. 5

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let Alice = x, John = 2x, Father = 10x. In two years: (x+2) + (2x+2) + (10x+2) = 58. 13x + 6 = 58 -> 13x = 52 -> x = 4. John is 2x, so 2 * 4 = 8. The logic confirms 8 is correct.