The average age of 36 students in a group is 13 years. When teacher's age is included to it, the average increases by one. What is the teacher's age in years ?  Options:  A) 35 years  B) 45 years  C) 51 years  D) 54 years  E) 50 years
Explanation:   Age of the teacher = (37 * 14 - 36 * 13)= 
<gadget id="calculator">(37 * 14 - 36 * 13)</gadget>
<output>50</output>
50 years. Answer: 50 years
<result>E</result>
The average age of 36 students in a group is 13 years. When teacher's age is included to it, the average increases by one. What is the teacher's age in years ?