Use some thinking to answer the following question. The average age of a class of 14 students is 10 yrs. if the teacher's age is also included, the average increases by one year. Find the age of the teacher\nOptions:\n(A) 30 Years\n(B) 31 Years\n(C) 32 Years\n(D) 34 Years\n(E) 25 Years
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Total age of students is 14X10 = 140 Years\nTotal age inclusive of teacher = 15X (10+1) = 165\nSo, Teacher's age is 165-140 = 25 Yrs\nThere is a shortcut for these type of problems\nTeacher's age is 10+(15X1) = 25 Years So the final answer is (E).
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