Multiple choice

Renu's mother was three times as old as Renu 5 year ago. After 5 years, she will be twice as old as Renu. Renu's present age in years is-

  1. 35

  2. 10

  3. 20

  4. 15

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

Let Renu's present age be x years. Five years ago: Renu was (x-5) and her mother was 3(x-5) = 3x-15. So mother's present age is (3x-15)+5 = 3x-10. After five years: Renu will be (x+5) and mother will be (3x-10)+5 = 3x-5. Given: 3x-5 = 2(x+5). Solving: 3x-5 = 2x+10, so x = 15. Therefore, Renu's present age is 15 years.