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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?
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A
4 Years.
💡 Explanation:
Let the youngest child's age be x. The ages are x, x+3, x+6, x+9, x+12. Sum = 5x + 30 = 50, so 5x = 20 and x = 4. The arithmetic progression with common difference 3 is the key structure. Checking: 4 + 7 + 10 + 13 + 16 = 50.