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3.
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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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4 years
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8 years
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10 years
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None of these
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Answer: Option A
Explanation:
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.
