Multiple choice

Twenty years from now, Arun's age will be three times his present age. His present age is

  1. $8$
  2. $12$
  3. $5$
  4. $10$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let x be the present age. x + 20 = 3x. 20 = 2x, so x = 10.

AI explanation

Let Arun's present age be x years. Twenty years from now his age will be x + 20, giving the linear equation x + 20 = 3x. Solving for x gives 2x = 20, so x = 10. Arun's present age is 10.

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