Question 186827
The father and son together have a total age of 36.

Son's age = x

Father's age = x + 30

Together their ages = 36.

x + x + 30 = 36

2x + 30 = 36

2x = 36 - 30

2x = 6

x = 6/2

x = 3

The son is 3 years old.