The average age of a group of 10 persons was decreased by 3 years w – McqOptions

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1.	The average age of a group of 10 persons was decreased by 3 years when one person, whose age was 42 years, was replaced by a new person. Find the age of the new person?
A.	22
B.	24
C.	12
D.	8
Answer» D. 8

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