The average age of a class of 39 students is 15 years. If the age of the teacher be included, then the average increases by3 months. Find the age of the teacher.

Arithmetic Aptitude

1)	The average age of a class of 39 students is 15 years. If the age of the teacher be included, then the average increases by3 months. Find the age of the teacher.

A) 19 years
B) 25 years
C) 22 years
D) 29 years

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