Multiple choice general knowledge math & puzzles

In 20 years, John will be 5 times as old as he is now. How old is he?

  1. 7

  2. 15

  3. 25

  4. 5
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let John's current age be x. In 20 years, his age will be x + 20. The problem states x + 20 = 5x. Solving for x gives 4x = 20, so x = 5. Testing other options: if he were 15, in 20 years he would be 35, which is not 5*15.

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