Aptitude | Arithmetic Aptitude 2 | Question 7

Sum of the age of 4 children born at interval of 4 years is 36. What is the age of youngest child?

(A)

2 years

(B)

3 years

(C)

4 years

(D)

5 years

Answer: (B)
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

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