The average age of 5 boys is 9 years..When their father is included the average age is 26 years..what is the fathers age
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sum of age of 5 boys is 9×5=45
sum of all people = 26×6=156
so father's age = 156-45=111yrs
sum of all people = 26×6=156
so father's age = 156-45=111yrs
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