Question

The average age of boys in a
class of 30 is 18 years if
10 more boys are to joins the
class the average age of the whole
class gets increases by a year.
what is the average age of
the Newcomers!​

Answer 1

Answer:

22 Years...

Step-by-step explanation:

Total average of 30 students = 18 years

Total age of 30 students = 540 yrs.

Total average age of 40 boys = 19 years

Total age of 40 students = 760 yrs.

Age of 10 new comers = 220 yrs.

So, Average age of 10 students = 220/10 yrs. = 22 yrs.

Hope It Helps............