New Click here to Enroll for SIDBI MSME Expert Classes by Experts

    Register

    Question

    The average age of 35 children and their teacher's age

    are 20 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
    A 49 years Correct Answer Incorrect Answer
    B 42 years Correct Answer Incorrect Answer
    C 60 years Correct Answer Incorrect Answer
    D 51 years Correct Answer Incorrect Answer
    E 55 years Correct Answer Incorrect Answer

    Solution

    Sum of the age of total children = 36 ×20 = 720 Sum of the age of children after excluding teacher = 35 ×19 = 665 Teacher’s age = 720 – 665 = 55 years

    Practice Next