the average age of seven persons sitting in a row facing east is 28 years. if

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the average age of seven persons sitting in a row facing east is 28 years. if the average age of the first three persons is 21 years and the average age of the last three persons is 34 years, then fin

Options:

A . 30 Years

B . 31 years

C . 26 years

D . 33 years

Answer: Option B
Explanation :

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