Multiple choice

After 12 years I shall be 3 times as old as I was 4 years ago. My present age is

  1. 21 years

  2. 12 years

  3. 8 years

  4. 20 years
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let present age be x. x + 12 = 3(x - 4) => x + 12 = 3x - 12 => 2x = 24 => x = 12.

AI explanation

Let the present age be x. The equation based on the given condition is x + 12 = 3 multiplied by (x minus 4). Solving this linear equation gives x + 12 = 3x minus 12, which simplifies to 2x = 24. Therefore, the present age is 12 years.

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