Question

The average age of 8 boys is 12 years. If a boy of 19 year leaves, the average age of the remaining boys is--

Answer 1

$\color{red}hello \: friend$


$\underline{\color{green}solution}$


Average age of 8 boys = 12 years

Sum of the ages of the 8 boys = (12 × 8) = 96 years

Sum of the ages after a 19 year old boy leaves = (96 - 19 ) = 77 years

Average age of the remaining boys = 77/7 years = 11 years

$\boxed{\therefore \: new \: average \: age = 11 \: years}$


HOPE IT HELPS

Answer 2

8 boys are 12 years so

12×8= 96
96-19=77/7=11.


answer is 11