Let, Age of Komal = x years Age of Rohan = (x + 6) years 4 yeas ago; Age of Komal = (x - 4) years Age of Rohan = (x + 6 - 4) = (x + 2) years Now, According to question: (x + 2) = 4 × (x - 4) x + 2 = 4x - 16 3x = 18 x = 6 Age of Komal = 6 years Age of Rohan = 6 + 6 = 12 years Hence, Age of Rohan is 12 years.