In a family, average age of father and mother is 38, year whereas average age of father, mother and

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4.Average

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In a family, the average age of father and mother is $38\, year$ whereas the average age of father, mother and their only daughter is $28\, year.$ Then, the age of the daughter is? (in $year$)

A

$5$

B

$6$

C

$8$

D

$10$

Solution

Sum of the age of father and mother $=38 \times 2=76$ years.

Sum of the age of father Mother and daughter $=28 \times 3=84$ years

Age of daughter $=84-76=8$ year

Standard 13

Quantitative Aptitude

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