Average age of $15$ students of a class is $15\, years.$ Out of these the average age of $5$ students is $14 \,years$ and that of the other $9$ students is $16\, years.$ The age of the $15^{th}$ student is (in $years$)

  • A

    $11$

  • B

    $14$

  • C

    $15$

  • D

    $15 \frac{2}{7}$

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