The average age of a class of 39 students is 15 years .If the age of the teacher

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โœช Choose the correct option.

The average age of a class of 39 students is 15 years .If the age of the teacher be included, then the average increases by 3 months .Find the age of the teacher.

A. 25 years
B. 27 years
C. 35 years
D. 8 years

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