22. The average age of 8 members of a group is 40 years. Among them the age of 1 member
bis 55 years and he is replaced by a new member whose age is 39 years. What is the effect on
the average age of group?
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Step-by-step explanation:
at first you multiply the 40 into it then the answer is 320 among the one replace and 12 320 - 55 + 39 so we get 304 the address is equal to 30 4 divided by the hymns the average is 38 years thanks
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