the average age of a family of 8 members is 18 years.If the age of the youngest member is 10 yrs ,then what was the avg age of the family just before the birth of the youngest member?
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avrrage afe of familt of 8 memver is 18 age
one young men is 10 age and the other man is 8 yea
one young men is 10 age and the other man is 8 yea
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