The average age of 36 students in a group is 14 years When a teacher 39 s age is included the averag...........

Quantitative Aptitude (CDS) Average

The average age of 36 students in a group is 14 years. When a teacher's age is included, the average increases by one. What is the teacher's age in years?

35 years

45 years

54 years

51 years

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Explanation:

The average age of 36 students=14 years
The age of the student including the teacher's age= 15 years.
Age of the teacher =(37×15-36×14) years
=51 years