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4.Average
easy
The average age of $11$ players of a cricket team is increased by $2 \,months$ when two of them aged $18\, years$ and $20 \,years$ are replaced by two new players. The average age of the new players is?
A
$19\,years \, 1 \, month$
B
$19\,years \, 6 \, month$
C
$19\,years \, 11 \, month$
D
$19\,years \, 5 \, month$
Solution
Sum of the age of $2$ new players
$=18+20+11 \times \frac{2}{12}=38+\frac{22}{12}=\frac{478}{12}$ $years$
average age of $2$ new players
$=\frac{478}{12 \times 2}=\frac{478}{24}=19 \frac{22}{24}=19$ $years$ $11$ $months$
Standard 13
Quantitative Aptitude
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