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    Question

    Average of 8 students is 15 years. If two more students

    of age 20 and 10 years join. What will be the new average age?
    A 25 Correct Answer Incorrect Answer
    B 20 Correct Answer Incorrect Answer
    C 10 Correct Answer Incorrect Answer
    D Remain same Correct Answer Incorrect Answer

    Solution

    Average = Sum of ages / Total number of students 15 = x / 8        => x = 120  Two more students of 10 and 20 years are added. So, => x = 120 + 20 + 10  => x = 150  ∴ The new average = 150/10 = 15 ∴ The new average is also 15. Thus, it remains same.

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