The average age of 32 students in a group is 14 years. When teacherâ€™s age is included to it, the average increases by one. What is the teacherâ€™s age in years?	Choices.
A) 31	B) 36	C) 47	D) 51	E) None
Sol.   Age of the teacher = ( 33 Ã— 15 â€“ 32 Ã— 14 ) years = 47 years.   Answer 47
<result>C</result>
The average age of 32 students in a group is 14 years. When teacherâ€™s age is included to it, the average increases by one. What is the teacherâ€™s age in years?