There are 3 members in a family. The average age of the fath

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There are 3 members in a family. The average age of the father and mother is 40 years. The average age of the father, mother and daughter is 30 years. Find the age (in years) of the daughter.

[SC CGL 17 July 2023 Shift 1 With Answers]

A

10

B

8

C

12

D

6

EXPLANATION

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