Sum of 4 children born at interval of 4 years is 36. What is the age of…

Answer:

3 years

Explanation:

Let the ages of children be x, (x+4),

(x+8) and (x+12) years.

Then x + x + 4 + x + 8 + x +12 = 36

4x + 24 = 36

4x = 12

x = 3

Age of the youngest child = x = 3 years