Multiple choice

Rohit's father is 5 times as old as Rohit. After 6 years, Rohit's father will be four times as old as Rohit will be. Find the present age of Rohit.

  1. 90

  2. 9

  3. 18

  4. 30

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

R = x, F = 5x. (5x+6) = 4(x+6). 5x+6 = 4x+24. x = 18.

AI explanation

Let Rohit's present age be x, making his father's age 5x. After 6 years, their ages will be x + 6 and 5x + 6, so the equation is 5x + 6 = 4(x + 6). Expanding and simplifying gives 5x + 6 = 4x + 24, which means x = 18. Rohit's present age is 18.