Question

The average age of 100 teachers in a college in
2000 was 50 years. In 2002,20 teachers
superannuated from their jobs, whose average
8 years. In 2005, 40 new teachers
joined the college whose average age was 38
y r. What was the average age of all the teachers in 2008
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Answer 1

Answer:

70 I know this thank you

Answer 2

Answer:

In the year 2002

100 teacher avg age 52

20 teacher left (avg age 60)

so avg age of 80 teacher=50

in 2005

40 new teacher avg age 38

reaming 80 teacher avg age in 2005 is 53

total avg of 120 teacher in 2005 is 48

so in 2008 their avg age will be 51