The average age of the committee of 10 members is 80 years. A member of age 72 retires and a new member of age 48 takes his place. What is the average age of the present committe
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Answer:
total age =10×80
=800
now a member is retired and one is added so new total age would be
800-72+48
=776 years
so average age would be 776/10
=77.6 years
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