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Question

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
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B
8 years
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C
10 years
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D
None of these
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Solution

The correct option is B 4 years
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.

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