Average age of 30 women decreases by 3 months if a new person Neha is included in place of a 25, yea

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4.Average

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The average age of $30$ women decreases by $3$ $months$ if a new person Neha is included in place of a $25\, year$ old woman. Calculate the age of Neha in $year$ ?

A

$17.5$

B

$20$

C

$30$

D

$22$

Solution

Average decreases by $3$ months or $\frac{3}{12}$ years

Sum of the age decreased $=30 \times \frac{3}{12}=\frac{15}{2}=7.5$ years

Age of Neha $=25-7.5=17.5$

Standard 13

Quantitative Aptitude

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