Question

The average age of a group went up by 2 years
when a man aged 34 years was replaced by an old
man aged 58 years. How many members were there
in the group?​

Answer 1

Answer:

(34(n-1)+58)/n=34+2

34(n-1) + 58 = 36n

34n - 34 + 58 = 36n

24 = 36n - 32n

24 = 2n

n = 12 members in the group

Step-by-step explanation:

Answer 2

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