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

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Answer: Option A

Explanation:

Let,

The age of the youngest child = x year

The age of the 2nd children = ( x + 3) year

The age of the 3rd children = ( x + 3 + 3) year

Tne age of the 4th children = ( x + 6 + 3) year

The age of the 5th children = ( x + 9 + 3) year

According to question,

x + x + 3 + x + 6 + x + 9 + x + 12 = 50

5x + 30 = 50

5x = 50 - 30

5x = 20

x = 4

So, the age of the youngest child is 4 years.