The average age of $36$ $students$ in a group is $14\, years.$ When teacher's age is included to it, the average increases by one what is the teacher's age in $years$ ?
The average age of $36$ $students$ in a group is $14\, years.$ When teacher's age is included to it, the average increases by one what is the teacher's age in $years$ ?
- A
$31$
- B
$36$
- C
$51$
- D
$56$
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