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 most appropriate option.
A) 35 years	B) 45 years	C) 51 years	D) 54 years	E) None of these
Explanation:   Age of the teacher = (37 * 15 - 36 * 14)= 
<gadget id="calculator">(37 * 15 - 36 * 14)</gadget>
<output>51</output>
51 years. Answer: 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 ?