Let the present age of Shikha be x years.
Therefore, the present age of Shikha’s brother Ravish = (x + 3) years.
So, sum of their ages = x + (x+ 3)
⇒ x +(x + 3) = 37
⇒ 2x + 3 = 37
Subtracting 3 from both sides, we get
⇒ 2x+ 3 – 3 = 37 – 3
⇒ 2x = 34
Dividing both sides by 2, we get
⇒ 2x/2 = 34/2
⇒ x = 17
Therefore, the present age of Shikha = 17 years,
And the present age of Ravish = x + 3 = 17 + 3 = 20 years.