the average age of a class of 35 students is 14 years if tthe teache age is included the average age increase byone year find the age of the teeacher
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average = 14 years , n=35
age of teacher = 14×1 + 15 = 29
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the average age of a class of 35 students is 14 years if tthe teache age is included the average age increase byone year find the age of the teeacher
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