Age of father is 13 times the age of his son. It will be only five times after four years. Find the present age of the father?

23 years

24 years

26 years

21 years

Let's denote the son's current age as x. Then the father's current age is 13x.

After 4 years:

Son's age = x + 4

Father's age = 13x + 4

According to the problem, after 4 years, the father's age will be 5 times the son's age:

13x + 4 = 5(x + 4)

13x + 4 = 5x + 20

8x = 16

x = 2

So, the father's current age is 13x = 13 * 2 = 26.