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 ?
Choose the correct choice from the following answers
A) 66 B) 77 C) 51 D) 98 E) 99
Explanation:   Age of the teacher = (37 * 15 - 36 * 14)= 
<gadget id="calculator">(37 * 15 - 36 * 14)</gadget>
<output>51</output>
51 years.   Answer: 51) 51 years
<result>C</result>
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 ?