Average age of $5$ boys is $16$ $year$ of which that of $4$ boys is $16\, year\, 3\, months.$ The age of the $5^{th}$ boy is
Average age of $5$ boys is $16$ $year$ of which that of $4$ boys is $16\, year\, 3\, months.$ The age of the $5^{th}$ boy is
- A
$15\, year$
- B
$15\, year$ $6\, months$
- C
$15\, year$ $4\, months$
- D
$15\, year$ $2\, months$
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