The average age of 28 students in a group is 16 years. When teacherâ€™s age is included to it, the average increases by one. What is the teacherâ€™s age in years?  Pick one:  A) 45  B) 36  C) 41  D) 51  E) 48
Sol.   Age of the teacher = ( 29 Ã— 17 â€“ 28 Ã— 16 ) years = 45 years.   45nswer 45
<result>A</result>
The average age of 28 students in a group is 16 years. When teacherâ€™s age is included to it, the average increases by one. What is the teacherâ€™s age in years?