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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