Problems based on Ages

Quantitative Aptitude( Paper-I )

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The average age of father and elder son is 35 years, the average age of father and younger son is 32 years and the average age of the two sons is 17 years . What is the average age of the father and his two sons?

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CAPF 2022 Paper-1

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30 years

27 years

28 years

29 years

Explanation:

28 years.

F + Se = 70...(1)
F+ Ys = 64.....(2)
Se+Ys = 34....(3)
Eq1 - eq2
We get
Se - Ys = 6......(4)
Add eq 3 and eq 4
Se-Ys = 6
Se+Ys= 34
2Se =40
Se =20
:. Se-Ys = 6
Ys= Se-6 =20-6 = 14
F + Se = 70
F = 70-20 = 50
Avg of F+Ys+Se = (50+14+20)/3
=84 /3
=28 yrs.

By: Parvesh Mehta

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