Multiple choice

The average of the ages of Rajan and his son is 20. If Rajan's present age is three times the age of his son, then what will be the age of Rajan 5 years from now?

  1. 40 years

  2. 28 years

  3. 35 years

  4. 25 years
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let son's age be x, then Rajan's age is 3x. Average (x + 3x) / 2 = 20, so 4x = 40, x = 10. Rajan is 30. In 5 years, he will be 35.

AI explanation

Let Rajan's son's present age be x years, making Rajan's age 3x years. Using the given average, (x + 3x) / 2 = 20, which simplifies to 4x = 40 and x = 10. Rajan is presently 30 years old, so 5 years from now his age will be 35 years.

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