Question

There are 15 members in a group whose average age is 25 years and one member left the group then the average increased by 1 year then the age of the member who has left are? ​

Answer 1

Answer:

No. of members in the group, n=15

Their average age = 25 years

Total sum of their ages = 25n= 25×15= 375 years

Now , one member has left the group, so number of members in the

group right now= 15-1= 14

but average age of them= 25+1=26 years

now , total sum of the ages of 14 members = 14×26= 364years

Age of the member who has left the group= (375-364) = 11 years.

Answer 2

Answer:

unnie your isn't only difficult it's super difficult..I even tried and it was a big fail..I'll try another time