The average age of 50 students in a class is 14 years. If the age of teacher is also included, the average becomes 15 years, find the age of the teacher.
Choose the correct answer: A) 30 B) 65 C) 60 D) 55 E) 56

Rationale: "explanation : if teacher ' s age is 14 years , there is no change in the average . but teacher has contributed 1 year to all the students along with maintaining his age at 15 . age of teacher = average age of all + total increase in age = 15 + ( 1 x 50 ) = 65 years answer : b"
Answer: B