The average age of a class of 42 students is 16 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) 59 Years OK. Let's think. Some random thoughts first:
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Total age of students is 42X16 = 672 Years\nTotal age inclusive of teacher = 43X (16+1) = 731\nSo, Teacher's age is 731-672 = 59 Yrs\nThere is a shortcut for these type of problems\nTeacher's age is 16+(43X1) = 59 Years The answer: (E).
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