The average age of a class of 100 students is 30 year If the age of the teacher is included then the...........

Quantitative Aptitude (CDS) Average

The average age of a class of 100 students is 30 year. If the age of the teacher is included, then the average increases by 8 month. Find the age of the teacher?

99.54year

96.66year

80.65year

76.65year

Explanation:

Total age of 100 students = (100x30) = 3000 year
Average age of 101 persons = 30 year 8 month = 30.66 year
Total age of 101 person = (30.66 x 101) = 3096.66 year
Age of the teacher = (3096.66 - 3000) = 96.66 year

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