Question

the average age of 8 boys is 12 years if a boy of 19 years leaves the . then what is the average of reamaining boys​

Answer 1

Total age of 8boys = 8*12 = 96

After 19yr old boy left, total age = 96-19= 77

Now, no of boys = 8-1=7

Avg age = 77/7 = 11years