Question

The average age of the boys in a class of 20 boys is 15.6years. what will be the average age if 5 new boys come whose average age is 15.4 years.​

Answer 1

Answer:

the average age is 15.6+15.4/2

=is 23.3

that is the average age of boys in class

Answer 2

Average of 20 boys=15.6
Average of 5 new boys=15.4
New average of (15.6*20+15.4*5)/25=15.56 years