The average age of 37 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) 35 years B) 45 years C) 51 years D) 52 years E) None of these
Explanation:   Age of the teacher = (38 * 15 - 37 * 14)= 
<gadget id="calculator">(38 * 15 - 37 * 14)</gadget>
<output>52</output>
52 years. Answer: 52 years
<result>D</result>
The average age of 37 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 ?