Question

the average age of four brothers is 10 years if the age of their father is include average is rises by eight years what will be the age of their father after 2 years​

Answer 1

Step-by-step explanation:

Avg=sum/ total no

sum of 4 brother's age= 10*4

=40

sum of 4 brother and father age= (10+8)*5

=18*5

=90

present age of father= 90-40

=50

after 2 yr = 50+2

=52