Question

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

Answer 1

Answer:

15.56 Years

Step-by-step explanation:

Average of 20 boys = 15.56 years

Average of 5 new boys = 15.4years

new average of 25 new boys = ( 15.6 × 20 + 15.4 × 5/25) = 15.56 years.