Average age of 5 boys is 16 year of which that of 4 boys is 16, year, 3, months. age of 5^{th} boy i

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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

$15\, year$ $2\, months$

Solution

Total age of $5$ boys $=16 \times 5=80$ years

Total age of $4$ boys $=\left(16 \frac{3}{12}\right) \times 4=16.25 \times 4=65$

Standard 13

Quantitative Aptitude

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