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    Question

    Section 4

    The average age of 33 children and their teacher's age

    are 25 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
    A 45 years Correct Answer Incorrect Answer
    B 42 years Correct Answer Incorrect Answer
    C 58 years Correct Answer Incorrect Answer
    D 52 years Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Sum of the age of total children and teacher = 34 × 25 = 850 Sum of the age of children after excluding = 33 × 24 = 792 Teacher’s age = 850 – 792 = 58 years

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