Multiple choice

Ratio of present ages of A and B is 16:7. After 12 years, A's age is twice of B's age then find present age of B?

  1. 42

  2. 39

  3. 50

  4. 47

  5. 32
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let ages be 16x and 7x. After 12 years: (16x + 12) = 2 * (7x + 12). Solving: 16x + 12 = 14x + 24, so 2x = 12, x = 6. B's present age is 7 * 6 = 42.

AI explanation

Let the present ages of A and B be 16x and 7x. After 12 years, A's age will be twice B's age, so 16x + 12 = 2(7x + 12). Expanding the brackets gives 16x + 12 = 14x + 24, which simplifies to 2x = 12 and x = 6. The present age of B is 7 * 6 = 42.

Keep practicing — related questions