New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    The average age of 32 children and their teacher's age

    are 28 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
    A 55 years Correct Answer Incorrect Answer
    B 52 years Correct Answer Incorrect Answer
    C 50 years Correct Answer Incorrect Answer
    D 60 years Correct Answer Incorrect Answer

    Solution

    Sum of the age of total children and teacher = 33 × 28 = 924 Sum of the age of children after excluding = 32 × 27 = 864 Teacher’s age = 924 – 864 = 60 years

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