After 18 years, Swarnim will be 4 times as old as he is now. His present age is 6 years.
Let us assume swarnim’s parent age be x year.
Then, after 18 year, Swarnim’s age = (x + 18) year
According to the question,
x + 18 = 4x
x – 4x = -18
– 3x = -18
– 3x/3 = (-18/3)
x = 6
Therefore, swarnim’s present age is 6 year.
