Question

The mean age of 40 students is 16 years and the average of am other 60 students is 20 years . find oit the meqn age of all the 100 students taken together​

Answer 1

Answer:

Total age of 40 old students =40×15=600years.

Total age of 40 old and 10 new students =50×15.2=760years

∴ Total age of 10 new students =760−600=160years

∴ Required average age =

10

160

=16years