The average age of a group is increased by 6 years when a pe

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The average age of a group is increased by 6 years when a person whose age is 24 years was replaced by a person whose age is 66. Find the number of persons in the group.

[SSC CHSL 2nd June 2022 Shift-1 With Answers]

A

7

B

8

C

6

D

9

EXPLANATION

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