The average age of 30 studemts is 25.when the age the teacher is added the average becomes 26.then what is the age of the teachern
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Actually what I did: First of all I set sum of age of all students equal to SS and notedS/30=16S/30=16. Thus S=480S=480. Then denoting teacher's age by xx I have (480+x)/(30+1)=(16+1)
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