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The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?

A. 4 years B. 8 years C. 10 years D. None of these Answer: Option A
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Solution(By Apex Team)

Let the ages of children be x, (x + 3), (x + 6), (x + 9) and (x + 12) years. Then, x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 50 ⇒ 5x = 20 ⇒ x = 4. ∴ Age of the youngest child => x = 4 years.