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Ten years ago, the ages of the member...

Ten years ago, the ages of the members of a joint family of eight people added up to 231 years. Three years later, one member died at the age of 60 years and a child was born during the same year. After another three years, one more member died, again at 60, and a child was born during the same year. The current average of this eight-member joint family is nearest to (a) 21 years      (b) 22 years     (c) 23 years (d) 24 years      (e) 25 years

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