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    Question

    The average age of 6 students is 42 years. A new student

    joins the group and the new average becomes 45 years. Find the age of the new student.
    A 47 yrs Correct Answer Incorrect Answer
    B 77 yrs Correct Answer Incorrect Answer
    C 63 yrs Correct Answer Incorrect Answer
    D 22 yrs Correct Answer Incorrect Answer

    Solution

    Total age of 6 students = 6 ├Ч 42 = 252 Total age of 7 students = 7 ├Ч 45 = 315 Age of new student = 315 тИТ 252 = 63 years

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